Home / People / Faculty / Yang Shengyuan

Yang Shengyuan

Associate Professor

Website: https://people.sutd.edu.sg/~shengyuan_yang/
Room Number: 1.202-02
Research Areas:
Material Science, Electronics Engineering

Pillar / Cluster: Engineering Product Development, Science, Mathematics and Technology


Shengyuan Yang is from the city of Nanjing in the east part of China. After one year’s study in Electrical Engineering at Tsinghua University, he was awarded the Hong Kong Jockey Club Scholarship and transferred to study Mathematics/Physics at The University of Hong Kong. He graduated with First Class Honours in 2005, then joined the condensed matter theory group at The University of Texas at Austin, and obtained the PhD in physics degree in 2011. The topics that he has worked on during PhD include electromotive force induced by magnetic dynamics, theory of optical second harmonic generation, physics of graphene & topological insulators, spin pumping & magnetic devices, and transport in disordered systems. He worked as an imaging geophysicist in CGG (US) Services at Houston from 2011 to 2013. He joined SUTD in June 2013.


  • Ph.D. in Physics, The University of Texas at Austin, USA, 2011
  • B. Sc. in Mathematics/Physics, The University of Hong Kong, Hong Kong, 2005

Research Laboratory for Quantum Materials

website of RLQM

Research Interests

Yang’s research interests are focused on the field of theoretical condensed matter physics, with particular emphasis on the topological aspects in condensed matter systems.

Current research interests include:

  1. Topological materials such as topological insulators, topological superconductors, topological metals etc. Topological materials have revolutionized our understanding of the fundamentals of solids. They are characterized by special topological structures in the bulk and protected states on their boundaries. These materials may have promising applications in next-generation electronics.
  2. Physical properties of novel 2D materials like graphene, silicene, transition metal dichalcogenides, 2D electrides and etc. The 2D nature makes these materials behave quite differently from usual 3D materials. They hold great potential for a wide range of applications.
  3. Transport phenomena. I am interested in exploring transport phenomena in two contexts. One is for mesoscopic structures involving novel materials such as topological materials or 2D materials with emergent degrees of freedom. The other is for bulk systems where the interplay between bulk band structure, disorder, and external fields may lead to interesting effects.

We develop and utilize a range of theoretical and computational methods, such as semiclassical approach, tight-binding modeling, first-principles DFT calculations, Green’s function method, non-equilibrium Keldysh technique, scattering approach, and various kinds of numerical techniques.

Students with a solid physics background who would like to pursue a PhD degree at SUTD or wish to have a short term visit to SUTD are welcome to contact Yang directly.

Recent Research Highlights

  • Valley-layer coupling (VLC). The current valleytronics research is based on the paradigm of time-reversal-connected valleys in 2D hexagonal materials, which forbids the fully electric generation of valley polarization by a gate field. We propose a novel VLC mechanism, which enables a direct coupling between a valley and a gate field. Furthermore, we find that systems with VLC can exhibit other interesting physics, such as valley-contrasting linear dichroism and optical selection of the valley and the electric polarization of interlayer excitons. [PRL 124, 037701 (2020)]
  • First 2D second-order topological insulator. Based on first-principles calculations and theoretical analysis, we predict the already experimentally synthesized graphdiyne as the first realistic 2D second-order topological insulator, with protected 0D corner states. [PRL 123, 256402 (2019)]
  • First demonstration of 3D quantum Hall effect. Collaborating with experimental colleagues, we give the first demonstration of 3D quantum Hall effect proposed by Halperin in 1987. We show that in ultrahigh quality bulk ZrTe5, when entering the extreme quantum limit, dissipationless longitudinal resistivity is observed, accompanied by a well-developed Hall plateau proportional to half of the Fermi wavelength along the field direction, suggesting a charge-density-wave Fermi surface instability driven by enhanced interaction effects. [Nature 569, 537 (2019)]
  • Circumventing the no-go theorem. The no-go theorem states that left- and right-handed Weyl points must appear in pairs in a non-interacting lattice.  Accompanying the no-go theorem, the surface of the system features Fermi arc states, which connect pairs of surface projected Weyl points. We construct a topological phase that circumvents this theorem, which has a single Weyl point without surface Fermi arcs, achieved by symmetry-enforced nodal walls spreading over the entire Brillouin zone boundary. [PRB 100, 041118(R) (2019)]
  • Quadratic & cubic nodal lines. We predict the existence of nodal lines with quadratic or cubic dispersion protected by crystalline symmetries, and prove that there is no other higher order possibility. We show their signatures in measurable physical properties and identify several realistic materials hosting such higher-order nodal lines. Particularly, we show that cubic nodal line features a new type of topological surface states, which span the whole surface Brillouin zone. [PRB 99, 121106(R) (2019)]
  • Nodal surface semimetals. We propose two classes of nodal surfaces. Without spin-orbit coupling (SOC), a class of nodal surfaces can be protected by space-time inversion symmetry and sublattice symmetry, while another class of nodal surfaces are guaranteed by a combination of twofold screw-rotation and time-reversal symmetry. We show that the inclusion of SOC will destroy the former class but may preserve the latter provided that the inversion symmetry is broken. We further generalize the result to magnetically ordered systems. Several concrete nodal-surface material examples are predicted. [PRB 97, 115125 (2018); PRB 97, 235150 (2018)]
  • Anomalous spatial shift in Andreev reflection. We predict for the first time that sizable positional shift can happen when a particle undergoes Andreev reflection at a normal-metal/superconductor interface. Particularly, a shift perpendicular to the incident plane occurs when the normal side has strong spin-orbit coupling (SOC). Moreover, even without SOC, the shift is present if the superconductor side has unconventional pair potential, and different pairing leads to distinct features in the shift, which can be detected in electrical measurement. [PRB 96, 121101(R) (2017); PRB 98, 075151 (2018); PRL 121, 176602 (2018); PRB 98, 195141 (2018); FoP 14, 33402 (2019)]
  • Nonsymmorphic Dirac loop, Dirac chain, & cubic Dirac point. We demonstrate that certain nonsymmorphic symmetries dictate four-fold degenerate Dirac loops in the band structure, robust against spin-orbit coupling. Multiple Dirac loops can be connected to form an extended Dirac chain. In addition, we find the first example of a nonsymmorphic-symmetry-protected cubic Dirac point. Concrete material examples are proposed to host these novel objects. Some have been confirmed in experiment. [Nat. Commun. 8, 1844 (2017); PRB 97, 045131 (2018); PRM 2, 051201(R) (2018); ACS Nano 14, 1888 (2020); Nat. Mater. 19, 27 (2020)]
  • First elemental ferroelectric material. We discover the first elemental ferroelectric material in monolayer As, Sb, and Bi. A spontaneous lattice distortion breaks the centrosymmetry and drives the system into a ferroelectric phase. The polarization is sizable to be detected in experiment, and the Curie temperature can be above room temperature. For Bi, an antiferroelectric metastable phase may also be realized. Later, we show that elemental Te few layers are also ferroelectric. [Adv. Funct. Mater. 28, 1707383 (2018); Materials Horizons 5, 521 (2018)]
  • Type-II & hybrid nodal loop. We propose the concepts of type-II and hybrid nodal loops. A type-II loop is composed of nodal points that are all type-II, whereas a loop containing both type-I and type-II points are of hybrid type. We show that these loops possess distinct properties in optical and magnetic response. In these works, we also reveal that an arbitrary nodal loop is characterized by a Z3 index for its topology inside the Brillouin zone (BZ), which distinguishes a loop that penetrates the BZ from a loop that sits around a single point. [PRB 96, 081106 (2017); PRB 97, 125143 (2018); FoP 15, 43201 (2020)]
  • Black hole, gravitational lens, & Hawking radiation in topological semimetal. Effective gravity and gauge fields are emergent properties intrinsic for low-energy quasiparticles in topological semimetals. We study the possibility of simulating black-hole/white-hole event horizons and gravitational lensing effect inside a strained topological semimetal. Possible experimental realizations and analogue of Hawking radiation effect are discussed. [npj Quantum Materials 2, 23 (2017)]
  • Blue Phosphorene oxide. As a variant of black phosphorene, blue phosphorene is a new 2D material recently realized in experiment. We predict that even more interesting physics appears when blue phosphorene is oxidated. The obtained blue phosphorene oxide (BPO) can host new topological phases with emergent topological fermions such as 2D pseudospin-1 fermions and double-Weyl fermions. The topological phases can be controlled by strain, and we predict a universal optical absorbance in its semimetal phase. [Nano Lett. 16, 6548 (2016)]
  • Exotic magnetoresponse in type-II Weyl metals. We discover unique signatures in the magnetoresponse of type-II Weyl metals. The energy tilt tends to squeeze the Landau levels (LLs), and, for a type-II Weyl node, there always exists a critical angle between the B field and the tilt, at which the LL spectrum collapses, regardless of the field strength. Before the collapse, signatures also appear in the magneto-optical spectrum, including the invariable presence of intraband peaks, the absence of absorption tails, and the special anisotropic field dependence. [PRL 117, 077202 (2016); PRL 119, 026404 (2017)]
  • First 2D material exhibiting bonding & magnetic phase transitions. The change of bonding status, typically occurring only in chemical processes, could dramatically alter the material properties. We predict that a tunable breaking and forming of a diatomic bond can be achieved through physical means, i.e., by a moderate biaxial strain, in the newly discovered MoN2 two-dimensional (2D) material. Remarkably, the bonding change also induces a magnetic phase transition, during which the magnetic moments transfer from the N(2p) sublattice to the Mo(4d) sublattice; meanwhile, the type of magnetic coupling is changed from ferromagnetic to antiferromagnetic. This is the first time that such kind of phase transition is discovered in 2D materials. [Nano Lett. 16, 4576 (2016)]
  • Chirality Hall effect in Weyl semimetals. We predict universal transverse shifts of the wave-packet center in transmission and reflection, perpendicular to the direction in which the Fermi energy or velocities change adiabatically. The anomalous shifts are opposite for electrons with different chirality, and they can be made imbalanced by breaking inversion symmetry. We discuss how to utilize local gates, strain effects, and circularly polarized lights to generate and probe such a chirality-dependent Hall effect. [PRL 115, 156603 (2015)]
  • Perfect topological valley filter. Like transistor for electronics, valley filter is the fundamental device for valleytronics. We propose the concept of topological valley filter, which is based on the topological 1D channels that are both valley-filtered and and propagating unidirectionally. As a result, such filters can in-principle achieve perfect performance with 100% valley filtering against possible scattering. Physically, it may be realized in valley-polarized QAH phase, or in domain walls between QAH and QVH phases. [PRB 91, 045404 (2015); PRB 92, 041404(R) (2015)]
  • Topological carbon materials. We show that conjugated p-orbital interactions, common to most carbon allotropes, can produce novel topological spin-orbit-free Weyl semimetals. We predict a family of carbon allotrope materials which possess Weyl loops, Weyl points, Weyl surfaces, triple points, Hopf-links, and birefringent Dirac points, with different kinds of symmetry/topology protection. At a surface terminated by vacuum there emerge topological surface bands. [Nano Lett. 15, 6974 (2015); Nanoscale 8, 7232 (2016); Nat. Commun. 8, 15641 (2017); Carbon 141, 417 (2019)]
  • Dirac semimetal thin films. Topological Dirac semimetals have been demonstrated in materials Na3Bi and Cd3As2 in 2014. We find interesting physics in their thin film structures. We predict that (confirmed in 2018 experiment) a gate electric field can be used to control the topological phase transition (TPT) between a trivial insulator and a quantum spin Hall insulator. This offers a simple design of a topological field effect transistor. We also predict that a small strain can also generate this TPT, based on which we propose the concept of piezo-topological transistor. [Scientific Reports 5, 7898 (2015); Scientific Reports 5, 14639 (2015); npj Quantum Mater. 2, 23 (2017); Nature 564, 390 (2018)]
  • Anomalous Hall effect: scattering and scaling relation. With a history of more than 100 years, the anomalous Hall effect has been widely used as a standard tool for characterizing ferromagnets. However, the understanding of this effect is still incomplete. We show that various scattering processes can be classified into universality classes, each class having a distinct contribution to the effect. We derive a general scaling relation involving multiple competing scattering mechanisms, described by a quadratic hypersurface in the space spanned by the partial resistivities. Our theory is confirmed by experiments on Fe films. [PRB 83, 125122 (2011); PRL 114, 217203 (2015)]
  • Dirac and Weyl superconductors. We propose a new topological phase of matter: the Dirac superconductor, which has protected bulk 4-fold nodal points and surface Andreev arcs at zero energy. We provide a sufficient criterion for realizing this phase. This work also pioneered in proposing the nodal loops and the associated drumhead surface states. We suggest that such state may have been realized in Cu-doped Bi2Se3. [PRL 113, 046401 (2014)]
  • Second order semiclassical theory and magneto-transport. Semiclassical theory is a well-established formalism, presented in almost all solid state physics textbooks. The existing semiclassical theory is only accurate to the first order in external fields. We formulate a second order semiclassical theory. This offers a powerful framework for studying various susceptibilities and nonlinear response coefficients. Particularly, we derive for the first time a complete theory for the magneto-conductivity in the semiclassical regime. We show that a negative longitudinal magneto-resistance may arise from Berry curvature effects, not necessarily due to chiral anomaly effect. [PRL 112, 166601 (2014); PRB 91, 214405 (2015); PRB 95, 165135 (2017)]
  • Properties of Electride materials. Electrides are a special kind of ionic solids with cavity-trapped electrons serving as the anions. Since their first discovery in 1983, several electride materials have been identified.  We show that 2D electrides Ca2N and Sr2N are promising optical and plasmonic materials. We predict that their bulk can be ideal hyperbolic optical material with minimal loss in the infrared range, and their monolayers have exceptional performance as anode materials for Na-ion batteries. In addition, we reveal the first pressure-induced phase transition from a 2D electride to 0D electride (also the first pressured induced metal-insulator transition in compound).  [Scientific Reports 5, 12285 (2015); PRB 95, 165436 (2017); ACS Appl. Mater. Interfaces 7, 24016 (2015); JACS 139, 13798 (2017)]
  • Magnetic control for valleytronics. In 2D materials including (gapped) graphene, silicene, transition metal dichalcogenides, the low-energy states are massive Dirac fermions in multiple valleys. We find that these states have valley-contrasting orbital magnetic moment, and propose to control valley polarization by using external magnetic field. We further predict unusual physical effects including an anomalous contribution to the Hall current and novel magneto-transport properties in a pn junction. [PRB 88, 115140 (2013); RSC Advances 5, 83350 (2015)]

Key Publications

  • Si Li, Shan-Shan Wang, Bo Tai, Weikang Wu, Bin Xiang, Xian-Lei Sheng, and S. A. Yang, “Tunable anomalous Hall transport in bulk and two-dimensional 1T−CrTe2: A first-principles study,” Phys. Rev. B 103, 045114 (2021).
  • Junping Hu, Zhangyin Wang, Genrui Zhang, Yu Liu, Ning Liu, Wei Li, Jianwen Li, Chuying Ouyang, and S. A. Yang, “Two-dimensional MnN utilized as high-capacity anode for Li-ion batteries,” Chin. Phys. B (In press).
  • Daliang Fang, Guangzhao Wang, Shaozhuan Huang, Tian Chen Li, Juezhi Yu, Dongbin Xiong, Dong Yan, Xue Liang Li, Jintao Zhang, Yew Von Lim, S. A. Yang, and Hui Ying Yang, “Combination of heterostructure with oxygen vacancies in Co@CoO1-x nanosheets array for high-performance lithium sulfur batteries,” Chemical Engineering Journal 411, 128546 (2021).
  • Zhi Yi Leong, Zhaojun Han, Guangzhao Wang, Dong-Sheng Li, S. A. Yang, and Hui Ying Yang, “Electric field modulated ion-sieving effects of graphene oxide membranes,” J. Mater. Chem. A 9, 244 (2021).
  • Cong Xiao, Huiying Liu, Jianzhou Zhao, S. A. Yang, and Qian Niu, “Thermoelectric generation of orbital magnetization in metals,” Phys. Rev. B 103, 045401 (2021).
  • Yan Gao, Jian-Feng Zhang, S. A. Yang, Kai Liu, and Zhong-Yi Lu, “Topological properties of non-centrosymmetric superconductors TIr2B2 (T=Nb, Ta),” arXiv:2012.15204.
  • Si Li, Weikang Wu, Xiaolong Feng, Shan Guan, Wanxiang Feng, Yugui Yao, and S. A. Yang, “Valley-dependent properties of monolayer MoSi2N4, WSi2N4 and MoSi2As4,” Phys. Rev. B 102, 235435 (2020).
  • Jianzhou Zhao, Yilin Wang, Xiaolong Feng, and S. A. Yang, “Electronic Correlations and Absence of Superconductivity in the Collapsed Phase of LaFe2As2,” arXiv:2012.11939.
  • Bo Tai, Weikang Wu, Xiaolong Feng, Yalong Jiao, Jianzhou Zhao, Yunhao Lu, Xian-Lei Sheng, and S. A. Yang, “Two-dimensional CoSe structures: Intrinsic magnetism, strain-tunable anisotropic valleys, magnetic Weyl point, and antiferromagnetic metal state,” Phys. Rev. B 102, 224422 (2020).
  • Jianzhou Zhao, Weikang Wu, Jiaojiao Zhu, Yunhao Lu, Bin Xiang, and S. A. Yang, “Highly anisotropic two-dimensional metal in monolayer MoOCl2,” Phys. Rev. B 102, 245419 (2020).
  • Jia-Xiao Dai, Kai Wang, S. A. Yang, and Y. X. Zhao, “Takagi Topological Insulator with Cellular Boundary Phase Diagram,” arXiv:2012.09460.
  • Qianqian Wang, Liemao Cao, Shi-Jun Liang, Weikang Wu, Guangzhao Wang, Ching Hua Lee, Wee Liat Ong, Hui Ying Yang, Lay Kee Ang, S. A. Yang, and Yee Sin Ang, “Unexpected Suppression of Fermi Level Pinning in Metal Contacts to Two-Dimensional Semiconductors MoSi2N4 and WSi2N4,” arXiv:2012.07465.
  • Hua Bai, Xinwei Wang, Weikang Wu, Pimo He, Zhu’an Xu, S. A. Yang, and Yunhao Lu, “Nonvolatile ferroelectric control of topological states in two-dimensional heterostructures,” Phys. Rev. B 102, 235403 (2020).
  • Cong Chen, Weikang Wu, Zhi-Ming Yu, Ziyu Chen, Y. X. Zhao, Xian-Lei Sheng, and S. A. Yang, “Graphyne as a second-order and real Chern topological insulator in two dimensions,” arXiv:2011.14868.
  • Yu Chen, Lishu Wu, Hai Xu, Chunxiao Cong, Si Li, Shun Feng, Hongbo Zhang, Chenji Zou, Jingzhi Shang, S. A. Yang, Kian Ping Loh, Wei Huang, and Ting Yu, “Visualizing the Anomalous Charge Density Wave States in Graphene/NbSe2 Heterostructures,” Advanced Materials 32, 2003746 (2020).
  • Y. X. Zhao, Yue-Xin Huang, and S. A. Yang, “Z2-projective translational symmetry protected topological phases,” Phys. Rev. B Rapid Comm. 102, 161117 (2020).
  • Guangzhao Wang, Zongfeng Li, Weikang Wu, Hao Guo, Cong Chen, Hongkuan Yuan, and S. A. Yang, “A two-dimensional h-BN/C2N heterostructure as a promising metal-free photocatalyst for overall water-splitting,” Phys. Chem. Chem. Phys. 22, 24446 (2020).
  • Yihao Yang, Zhen Gao, Xiaolong Feng, Yue-Xin Huang, Peiheng Zhou, S. A. Yang, Yidong Chong, Baile Zhang, “Ideal Unconventional Weyl Point in a Chiral Photonic Metamaterial,” Phys. Rev. Lett. 125, 143001 (2020).
  • Y. X. Zhao, Cong Chen, Xian-Lei Sheng, and S. A. Yang, “Spin-orbital coupled real topological phases,” arXiv:2009.10287.
  • Kai Wang, Jia-Xiao Dai, L. B. Shao, S. A. Yang, and Y. X. Zhao, “Boundary Criticality of PT-Invariant Topology and Second-Order Nodal-Line Semimetals,” Phys. Rev. Lett. 125, 126403 (2020).
  • I. Di Bernardo, J. Hellerstedt, C. Liu, G. Akhgar, W. Wu, S. A. Yang, D. Culcer, S.-K. Mo, S. Adam, M. T. Edmonds, and M. S. Fuhrer, “Progress in epitaxial thin-film Na3Bi as a topological electronic material,” arXiv:2009.00244.
  • Ying Liu, Zhi-Ming Yu, Cong Xiao, and S. A. Yang, “Quantized Circulation of Anomalous Shift in Interface Reflection,” Phys. Rev. Lett. 125, 076801 (2020).
  • Cong Chen, Zhida Song, Jian-Zhou Zhao, Ziyu Chen, Zhi-Ming Yu, Xian-Lei Sheng, and S. A. Yang, “Universal Approach to Magnetic Second-Order Topological Insulator,” Phys. Rev. Lett. 125, 056402 (2020).
  • Wenmin Zhang, Shanshan Wang, S. A. Yang, Xing-Hua Xia, and Yi-Ge Zhou, “Plasmon of Au nanorods activates metal–organic frameworks for both the hydrogen evolution reaction and oxygen evolution reaction,” Nanoscale 12, 17290 (2020).
  • Ziming Zhu, Chunyan Liao, Si Li, Xiaoming Zhang, Weikang Wu, Zhi-Ming Yu, Rui Yu, Wei Zhang, and S. A. Yang, “First-principles study of bulk and two-dimensional structures of the AMnBi family of materials (A =K, Rb, Cs),” Phys. Rev. B 102, 035444 (2020).
  • Hao Guo, Jianzhou Zhao, Cong Chen, Si Li, Wentao Jiang, Haidong Fan, Xiaobao Tian, and S. A. Yang, “Nonsymmorphic nodal-line metals in the two-dimensional rare earth monochalcogenides MX (M = Sc, Y; X = S, Se, Te),” J. Mater. Sci. 55, 14883 (2020).
  • I. Di Bernardo, J. Collins, W. Wu, Ju Zhou, S. A. Yang, Sheng Ju, M. T. Edmonds, and M. S. Fuhrer, “Importance of interactions for the band structure of the topological Dirac semimetal Na3Bi,” Phys. Rev. B 102, 045124 (2020).
  • Xiaolong Feng, Ying Liu, Zhi-Ming Yu, Zhongshui Ma, L. K. Ang, Yee Sin Ang, and S. A. Yang, “Super-Andreev reflection and longitudinal shift of pseudospin-1 fermions,” Phys. Rev. B 101, 235417 (2020).
  • Zhen Zhu, Si Li, Meng Yang, Xiao-Ang Nie, Hao-Ke Xu, Xu Yang, Dan-Dan Guan, Shiyong Wang, Yao-Yi Li, Canhua Liu, Zhi-Qiang Mao, Nan Xu, Yugui Yao, S. A. Yang, You-Guo Shi, Hao Zheng, and Jin-Feng Jia, “A tunable and unidirectional one-dimensional electronic system Nb2n+1SinTe4n+2,” npj Quantum Materials 5, 35 (2020).
  • Weikang Wu, Zhi-Ming Yu, Xiaoting Zhou, Y. X. Zhao, and S. A. Yang, “Higher-order Dirac fermions in three dimensions,” Phys. Rev. B 101, 205134 (2020).
  • Y. X. Zhao, Y. Lu, and S. A. Yang, “Topological second-order spin-3/2 liquids with hinge Fermi arcs,” arXiv:2005.14500.
  • Y. X. Zhao and S. A. Yang, “Index theorem on chiral Landau bands for topological fermions,” arXiv:2005.05685.
  • Liemao Cao, Guanghui Zhou, Qingyun Wu, S. A. Yang, Hui Ying Yang, Yee Sin Ang, and L. K. Ang, “Electrical Contact between an Ultrathin Topological Dirac Semimetal and a Two-Dimensional Material,” Phys. Rev. Applied 13, 054030 (2020).
  • Si Li, Zhi-Ming Yu, Yugui Yao, and S. A. Yang, “Type-II topological metals,” Frontiers of Physics 15, 43201 (2020).
  • Zhi Wang, Meng Huang, Jianzhou Zhao, Cong Chen, Haoliang Huang, Xiangqi Wang, Ping Liu, Jianlin Wang, Junxiang Xiang, Chao Feng, Zengming Zhang, Xudong Cui, Yalin Lu, S. A. Yang, and Bin Xiang, “Fermi liquid behavior and colossal magnetoresistance in layered MoOCl2,” Phys. Rev. Materials Rapid Comm. 4, 041001 (2020).
  • Xinwei Wang, Chengcheng Xiao, Chao Yang, Miaogen Chen, S. A. Yang, Jun Hu, Zhaohui Ren, Hui Pan, Wenguang Zhu, Zhu-An Xu, and Yunhao Lu, “Ferroelectric control of single-molecule magnetism in 2D limit,” Science Bulletin 65, 1252 (2020).
  • Yuan Gan, Jiyuan Liang, Chang-woo Cho, Si Li, Yanping Guo, Xiaoming Ma, Xuefeng Wu, Jinsheng Wen, Xu Du, Mingquan He, Chang Liu, S. A. Yang, Kedong Wang, and Liyuan Zhang, “Bandgap opening in MoTe2 thin flakes induced by surface oxidation,” Frontiers of Physics 15, 33602 (2020).
  • Pawel J. Kowalczyk, Simon A. Brown, Tobias Maerkl, Qiangsheng Lu, Ching-Kai Chiu, Ying Liu, S. A. Yang, Xiaoxiong Wang, Ilona Zasada, Francesca Genuzio, Tevfik Onur Menteş, Andrea Locatelli, Tai-Chang Chiang, and Guang Bian, “Realisation of Symmetry Enforced Two-Dimensional Dirac Fermions in Nonsymmorphic α-Bismuthene,” ACS Nano 14, 1888 (2020).
  • Zhi-Ming Yu, Shan Guan, Xian-Lei Sheng, Weibo Gao, and S. A. Yang, “Valley-Layer Coupling: A New Design Principle for Valleytronics,” Phys. Rev. Lett. 124, 037701 (2020).
  • Chenqiang Hua, Si Li, Zhu-An Xu, Yi Zheng, S. A. Yang, and Yunhao Lu, “Tunable Topological Energy Bands in Two Dimensional Dialkali-Metal Monoxides,” Advanced Science 7, 1901939 (2020).
  • Xian-Lei Sheng, Cong Chen, Huiying Liu, Ziyu Chen, Zhi-Ming Yu, Y. X. Zhao, and S. A. Yang, “Two-Dimensional Second-Order Topological Insulator in Graphdiyne,” Phys. Rev. Lett. 123, 256402 (2019).
  • Xuhai Liu, Shengli Zhang, Shiying Guo, Bo Cai, S. A. Yang, Fukai Shan, Martin Pumera, and Haibo Zeng, “Advances of 2D bismuth in energy sciences,” Chem. Soc. Rev. 49, 263 (2020).
  • Si Li, Ying Liu, Zhi-Ming Yu, Yalong Jiao, Shan Guan, Xian-Lei Sheng, Yugui Yao, and S. A. Yang, “Two-dimensional antiferromagnetic Dirac fermions in monolayer TaCoTe2,” Phys. Rev. B 100, 205102 (2019).
  • Shan-Shan Wang, Weikang Wu, and S. A. Yang, “Progress on topological nodal line and nodal surface,” Acta Physica Sinica 68, 227101 (2019) (Invited Review).
  • Yihao Yang, Jian-ping Xia, Hong-xiang Sun, Yong Ge, Ding Jia, Shou-qi Yuan, S. A. Yang, Yidong Chong, and Baile Zhang, “Observation of a topological nodal surface and its surface-state arcs in an artificial acoustic crystal,” Nature Communications 10, 5185 (2019).
  • Junping Hu, Chengyong Zhong, Weikang Wu, Ning Liu, Yu Liu, S. A. Yang, and Chuying Ouyang, “Two-dimensional honeycomb borophene oxide: a promising anode material offering super high capacity for Li/Na-ion batteries,” Journal of Physics: Condensed Matter 32, 065001 (2020).
  • Ziming Zhu, Zhi-Ming Yu, Weikang Wu, Lifa Zhang, Wei Zhang, Fan Zhang, and S. A. Yang, “Composite Dirac semimetals,” Phys. Rev. B Rapid Comm. 100, 161401 (2019).
  • T. Y. Yang, Q. Wan, D. Y. Yan, Z. Zhu, Z. W. Wang, C. Peng, Y. B. Huang, R. Yu, J. Hu, Z. Q. Mao, Si Li, S. A. Yang, Hao Zheng, Jin-Feng Jia, Y. G. Shi, and N. Xu, “Directional massless Dirac fermions in a layered van der Waals material with one-dimensional long-range order,” Nature Materials 19, 27 (2020).
  • Xin Xu, Bo Chen, Junping Hu, Bowen Sun, Xiaohui Liang, Nan Li, S. A. Yang, Hua Zhang, Wei Huang, and Ting Yu, “Heterostructured TiO2 Spheres with Tunable Interiors and Shells toward Improved Packing Density and Pseudocapacitive Sodium Storage,” Advanced Materials 31, 1904589 (2019).
  • Jing Zhang, Luojun Du, Shun Feng, Run-Wu Zhang, Bingchen Cao, Chenji Zou, Yu Chen, Mengzhou Liao, Baile Zhang, S. A. Yang, Guangyu Zhang, and Ting Yu, “Enhancing and controlling valley magnetic response in MoS2/WS2 heterostructures by all-optical route,” Nature Communications 10, 4226 (2019).
  • Yalong Jiao, Weikang Wu, Fengxian Ma, Zhi-Ming Yu, Yunhao Lu, Xian-Lei Sheng, Yunwei Zhang, and S. A. Yang, “Room temperature ferromagnetism and antiferromagnetism in two-dimensional iron arsenides,” Nanoscale 11, 16508 (2019).
  • Hao Chen, Weikang Wu, S. A. Yang, Xiao Li, and Lifa Zhang, “Chiral phonons in kagome lattices,” Phys. Rev. B 100, 094303 (2019).
  • Jing-Yang You, Cong Chen, Zhen Zhang, Xian-Lei Sheng, S. A. Yang, and Gang Su, “Two-dimensional Weyl half-semimetal and tunable quantum anomalous Hall effect,” Phys. Rev. B 100, 064408 (2019).
  • Cong Xiao, Yi Liu, Zhe Yuan, S. A. Yang, and Qian Niu, “Temperature dependence of the side-jump spin Hall conductivity,” Phys. Rev. B 100, 085425 (2019).
  • Shan-Shan Wang, Zhi-Ming Yu, Ying Liu, Yalong Jiao, Shan Guan, Xian-Lei Sheng, and S. A. Yang, “Two-dimensional nodal-loop half-metal in monolayer MnN,” Phys. Rev. Materials 3, 084201 (2019).
  • Zhi-Ming Yu, Weikang Wu, Yu Xin Zhao, and S. A. Yang, “Circumventing the no-go theorem: A single Weyl point without surface Fermi arcs,” Phys. Rev. B Rapid Comm. 100, 041118 (2019).
  • Yan Gao, Chengyong Zhong, S. A. Yang, Kai Liu, and Zhong-Yi Lu, “Grapheayne: a class of low-energy carbon allotropes with diverse optoelectronic and topological properties,” arXiv:1908.01282.
  • Cong Xiao, Ying Liu, Ming Xie, S. A. Yang, and Qian Niu, “Theory of phonon side jump contribution in anomalous Hall transport,” Phys. Rev. B 99, 245418 (2019).
  • Wenhan Zhou, Shiying Guo, Shengli Zhang, Zhen Zhu, S. A. Yang, Mingxing Chen, Bo Cai, Hengze Qu, and Haibo Zeng, “Unusual Electronic Transitions in Two-dimensional Layered SnSb2Te4 Driven by Electronic State Rehybridization,” Phys. Rev. Applied 11, 064045 (2019).
  • Fangdong Tang, Yafei Ren, Peipei Wang, Ruidan Zhong, John Schneeloch, S. A. Yang, Kun Yang, Patrick A. Lee, Genda Gu, Zhenhua Qiao, and Liyuan Zhang, “Three-dimensional quantum Hall effect and metal-insulator transition in ZrTe5,” Nature 569, 537 (2019).
  • Liyan Zhu, Benhao Zhao, Tingting Zhang, Guibin Chen, and S. A. Yang, “How is Honeycomb Borophene Stabilized on Al(111),” J. Phys. Chem. C 123, 14858 (2019).
  • Weikang Wu, Yalong Jiao, Si Li, Xian-Lei Sheng, Zhi-Ming Yu, and S. A. Yang, “Hourglass Weyl loops in two dimensions: Theory and material realization in monolayer GaTeI family,” Phys. Rev. Materials 3, 054203 (2019).
  • Chengcheng Xiao, Xinwei Wang, Xiaodong Pi, S. A. Yang, Yuanping Feng, Yunhao Lu, and Shengbai Zhang, “Spontaneous symmetry lowering of Si (001) towards two-dimensional ferro/antiferroelectric behavior,” Phys. Rev. Materials 3, 044410 (2019).
  • Yan Gao, Weikang Wu, Peng-Jie Guo, Chengyong Zhong, S. A. Yang, Kai Liu, and Zhong-Yi Lu, “Hexagonal supertetrahedral boron: A topological metal with multiple spin-orbit-free emergent fermions,” Phys. Rev. Materials 3, 044202 (2019).
  • Zhi-Ming Yu, Ying Liu, and S. A. Yang, “Anomalous spatial shifts in interface electronic scattering,” Frontiers of Physics 14, 33402 (2019) (Invited Review).
  • Zhi-Ming Yu, Weikang Wu, Xian-Lei Sheng, Yu Xin Zhao, and S. A. Yang, “Quadratic and cubic nodal lines stabilized by crystalline symmetry,” Phys. Rev. B Rapid Comm. 99, 121106 (2019).
  • Can Yesilyurt, Zhuo Bin Siu, Seng Ghee Tan, Gengchiau Liang, S. A. Yang, and Mansoor B. A. Jalil, “Electrically tunable valley polarization in Weyl semimetals with tilted energy dispersion,” Scientific Reports 9, 4480 (2019).
  • Junping Hu, Chuying Ouyang, S. A. Yang, and Hui Ying Yang, “Germagraphene as promising anode material for Lithium-ion batteries predicted from first-principles calculations,” Nanoscale Horizons 4, 457 (2019).
  • Cong Chen, Zhi-Ming Yu, Si Li, Ziyu Chen, Xian-Lei Sheng, and S. A. Yang, “Weyl-loop half-metal in Li3(FeO3)2,” Phys. Rev. B 99, 075131 (2019).
  • Chengyong Zhong, Weikang Wu, Junjie He, Guangqian Ding, Yi Liu, Dengfeng Li, S. A. Yang, and Gang Zhang, “Two-dimensional honeycomb borophene oxide: strong anisotropy and nodal loop transformation,” Nanoscale 11, 2468 (2019).
  • Ying Liu, Zhi-Ming Yu, Jie Liu, Hua Jiang, and S. A. Yang, “Transverse shift in crossed Andreev reflection,” Phys. Rev. B 98, 195141 (2018).
  • James L. Collins, Anton Tadich, Weikang Wu, Lidia C. Gomes, Joao N. B. Rodrigues, Chang Liu, Jack Hellerstedt, Hyejin Ryu, Shujie Tang, Sung-Kwan Mo, Shaffique Adam, S. A. Yang, Michael. S. Fuhrer, and Mark T. Edmonds, “Electric-field-tuned topological phase transition in ultrathin Na3Bi,” Nature 564, 390 (2018).
  • Zhi-Ming Yu, Ying Liu, Yugui Yao, and S. A. Yang, “Unconventional Pairing Induced Anomalous Transverse Shift in Andreev Reflection,” Phys. Rev. Lett. 121, 176602 (2018).
  • Peng Li, Weikang Wu, Yan Wen, Chenhui Zhang, Junwei Zhang, Senfu Zhang, Zhi-Ming Yu, S. A. Yang, A. Manchon, and Xi-xiang Zhang, “Spin-momentum locking and spin-orbit torques in magnetic nano-heterojunctions composed of Weyl semimetal WTe2,” Nature Communications 9, 3990 (2018).
  • Shan-Shan Wang, Ying Liu, Zhi-Ming Yu, Xian-Lei Sheng, Liyan Zhu, Shan Guan, and S. A. Yang, “Monolayer Mg2C: Negative Poisson’s ratio and unconventional two-dimensional emergent fermions,” Phys. Rev. Materials 2, 104003 (2018).
  • Yiping Wang, Xingchuan Zhu, Kefei Zou, S. A. Yang, and Huaiming Guo, “Topological bosonic states on ribbons of honeycomb lattice,” Phys. Rev. A 98, 043617 (2018).
  • Hewen Wang, Musheng Wu, Zhengfang Tian, Gang Liu, Bo Xu, S. A. Yang, and Chuying Ouyang, “Electron-donor doping enhanced Li storage in electride Ca2N monolayer: a first-principles study,” J. Phys.: Condens. Matter 30, 345501 (2018).
  • Junping Hu, Weikang Wu, Chengyong Zhong, Ning Liu, Chuying Ouyang, Hui Ying Yang, and S. A. Yang, “Three-dimensional honeycomb carbon: Junction line distortion and novel emergent fermions,” Carbon 141, 417 (2019).
  • Ziming Zhu, Ying Liu, Zhi-Ming Yu, Shan-Shan Wang, Yu Xin Zhao, Yuanping Feng, Xian-Lei Sheng, and S. A. Yang, “Quadratic contact point semimetal: Theory and material realization,” Phys. Rev. B 98, 125104 (2018).
  • Xiaoming Zhang, Zhi-Ming Yu, Ziming Zhu, Weikang Wu, Shan-Shan Wang, Xian-Lei Sheng, and S. A. Yang, “Nodal Loop and Nodal Surface States in Ti3Al Family Materials,” Phys. Rev. B 97, 235150 (2018).
  • Wing Chi Yu, Xiaoting Zhou, Feng-Chuan Chuang, S. A. Yang, Hsin Lin, and Arun Bansil, “Nonsymmorphic cubic Dirac point and crossed nodal rings across the ferroelectric phase transition in LiOsO3,” Phys. Rev. Materials Rapid Comm. 2, 051201(R) (2018).
  • Ying Liu, Zhi-Ming Yu, Hua Jiang, and S. A. Yang, “Goos-Hänchen-like shifts at metal/superconductor interface,” Phys. Rev. B 98, 075151 (2018).
  • Weikang Wu, Ying Liu, Si Li, Chengyong Zhong, Zhi-Ming Yu, Xian-Lei Sheng, Yu Xin Zhao, and S. A. Yang, “Nodal surface semimetals: Theory and material realization,” Phys. Rev. B 97, 115125 (2018).
  • Xiaoming Zhang, Zhi-Ming Yu, Yunhao Lu, Xian-Lei Sheng, Hui Ying Yang, and S. A. Yang, “Hybrid nodal loop metal: Unconventional magnetoresponse and material realization,” Phys. Rev. B 97, 125143 (2018).
  • Shaozhuan Huang, Yew Von Lim, Xiaoming Zhang, Ye Wang, Yun Zheng, Dezhi Kong, Meng Ding, S. A. Yang, and Hui Ying Yang, “Regulating the Polysulfide Redox Conversion by Iron Phosphide Nanocrystals for High-Rate and Ultrastable Lithium-Sulfur Battery,” Nano Energy 51, 340 (2018).
  • Yao Wang, Chengcheng Xiao, Miaogen Chen, Chenqiang Hua, Junding Zou, Chen Wu, Jianzhong Jiang, S. A. Yang, Yunhao Lu, and Wei Ji, “Two-dimensional ferroelectricity and switchable spin-textures in ultra-thin elemental Te multilayers,” Materials Horizons 5, 521 (2018).
  • Shan Guan, Chang Liu, Yunhao Lu, Yugui Yao, and S. A. Yang, “Tunable ferroelectricity and anisotropic electric transport in monolayer β-GeSe,” Phys. Rev. B 97, 144104 (2018).
  • Si Li, Ying Liu, Botao Fu, Zhi-Ming Yu, S. A. Yang, and Yugui Yao, “Almost ideal nodal-loop semimetal in monoclinic CuTeO3 material,” Phys. Rev. B 97, 245148 (2018).
  • Ying Liu, S. A. Yang, and Fan Zhang, “Circular dichroism and radial Hall effects in topological materials,” Phys. Rev. B 97, 035153 (2018).
  • Si Li, Ying Liu, Shan-Shan Wang, Zhi-Ming Yu, Shan Guan, Xian-Lei Sheng, Yugui Yao, and S. A. Yang, “Nonsymmorphic-symmetry-protected hourglass Dirac loop, nodal line, and Dirac point in bulk and monolayer X3SiTe6 (X=Ta, Nb),” Phys. Rev. B 97, 045131 (2018).
  • Chengcheng Xiao, Fang Wang, S. A. Yang, Yunhao Lu, Yuanping Feng, Shengbai Zhang, “Elemental Ferroelectricity and Antiferroelectricity in Group-V Monolayer,” Advanced Functional Materials 28, 1707383 (2018).
  • Weikang Wu, Bo Tai, Shan Guan, S. A. Yang, and Gang Zhang, “Hybrid Structures and Strain-Tunable Electronic Properties of Carbon Nanothreads,” J. Phys. Chem. C 122, 3101 (2018).
  • Pei Yang, Lijie Shi, Jian-Min Zhang, Gui-Bin Liu, S. A. Yang, Wei Guo, and Yugui Yao, “Tuning to the Band Gap by Complex Defects Engineering: Insights from Hybrid Functionals Calculations in CuInS2,” Journal of Physics D: Applied Physics 51, 025105 (2018).
  • Shan-Shan Wang, Ying Liu, Zhi-Ming Yu, Xian-Lei Sheng, and S. A. Yang, “Hourglass Dirac Chain Metal in Rhenium Dioxide,” Nature Communications 8, 1844 (2017).
  • Peng Li, Yan Wen, Xin He, Qiang Zhang, Chuan Xia, Zhi-Ming Yu, S. A. Yang, Zhiyong Zhu, Husam N. Alshareef, and Xi-Xiang Zhang, “Evidence for topological type-II Weyl semimetal WTe2,” Nature Communications 8, 2150 (2017).
  • Yunwei Zhang, Weikang Wu, Yanchao Wang, S. A. Yang, and Yanming Ma, “Pressure-Stabilized Semiconducting Electrides in Alkaline-Earth Metal Subnitrides,” J. Am. Chem. Soc. 139, 13798 (2017).
  • Yee Sin Ang, S. A. Yang, Chao Zhang, Zhongshui Ma, and Lay Kee Ang, “Valleytronics in merging Dirac cones: All-electric-controlled valley filter, valve and universal reversible logic gate,” Phys. Rev. B 96, 245410 (2017).
  • Shan Guan, Ying Liu, Zhi-Ming Yu, Shan-Shan Wang, Yugui Yao, and S. A. Yang, “Two-dimensional spin-orbit Dirac point in monolayer HfGeTe,” Phys. Rev. Materials 1, 054003 (2017).
  • Cong Chen, Shan-Shan Wang, Lei Liu, Zhi-Ming Yu, Xian-Lei Sheng, Ziyu Chen, and S. A. Yang, “Ternary wurtzite CaAgBi materials family: A playground for essential and accidental, type-I and type-II Dirac fermions,” Phys. Rev. Materials 1, 044201 (2017).
  • Ying Liu, Zhi-Ming Yu, and S. A. Yang, “Transverse Shift in Andreev Reflection,” Phys. Rev. B Rapid Comm. 96, 121101 (2017).
  • Pei Yang, Bo Tai, Weikang Wu, Jian-Min Zhang, Feng Wang, Shan Guan, Wei Guo, Yunhao Lu, and S. A. Yang, “Tailoring lanthanide doping in perovskite CaTiO3 for luminescence applications,” Phys. Chem. Chem. Phys. 19, 16189 (2017).
  • Chengyong Zhong, Yuanping Chen, Zhi-Ming Yu, Yuee Xie, Han Wang, S. A. Yang, and Shengbai Zhang, “Three-dimensional Pentagon Carbon with a genesis of emergent fermions,” Nature Communications 8, 15641 (2017).
  • Linfeng Sun, Xiaoming Zhang, Fucai Liu, Youde Shen, Xiaofeng Fan, Shoujun Zheng, John T. L. Thong, Zheng Liu, S. A. Yang, and Hui Ying Yang, “Vacuum level dependent photoluminescence in chemical vapor deposition-grown monolayer MoS2,” Scientific Reports 7, 16714 (2017).
  • Xiaoming Zhang, Zhi-Ming Yu, Xian-Lei Sheng, Hui Ying Yang, and S. A. Yang, “Coexistence of four-band nodal rings and triply-degenerate nodal points in centrosymmetric metal diborides,” Phys. Rev. B 95, 235116 (2017).
  • Shan Guan, Zhi-Ming Yu, Ying Liu, Gui-Bin Liu, Liang Dong, Yunhao Lu, Yugui Yao, and S. A. Yang, “Artificial gravity field, astrophysical analogues, and topological phase transitions in strained topological semimetals,” npj Quantum Materials 2, 23 (2017).
  • Si Li, Zhi-Ming Yu, Ying Liu, Shan Guan, Shan-Shan Wang, Xiaoming Zhang, Yugui Yao, and S. A. Yang, “Type-II nodal loops: Theory and material realization,” Phys. Rev. B Rapid Comm. 96, 081106 (2017).
  • Can Yesilyurt, Zhuo Bin Siu, Seng Ghee Tan, Gengchiau Liang, S. A. Yang, and Mansoor B. A. Jalil, “Anomalous tunneling characteristic of Weyl semimetals with tilted energy dispersion,” Appl. Phys. Lett. 111, 063101 (2017).
  • Tay-Rong Chang, Su-Yang Xu, Daniel S. Sanchez, Wei-Feng Tsai, Shin-Ming Huang, Guoqing Chang, Chuang-Han Hsu, Guang Bian, Ilya Belopolski, Zhi-Ming Yu, S. A. Yang, Titus Neupert, Horng-Tay Jeng, Hsin Lin, and M. Zahid Hasan, “Type-II Symmetry-Protected Topological Dirac Semimetals,” Phys. Rev. Lett. 119, 026404 (2017).
  • Yang Gao, S. A. Yang, and Qian Niu, “Intrinsic relative magnetoconductivity of nonmagnetic metals,” Phys. Rev. B 95, 165135 (2017).
  • Shengli Zhang, Wenhan Zhou, Yandong Ma, Jianping Ji, Bo Cai, S. A. Yang, Zhen Zhu, Zhongfang Chen, and Haibo Zeng, “Antimonene Oxides: Emerging Tunable Direct Bandgap Semiconductor and Novel Topological Insulator,” Nano Lett. 17, 3434 (2017).
  • Guoqing Chang, Su-Yang Xu, Shin-Ming Huang, Daniel S. Sanchez, Chuang-Han Hsu, Guang Bian, Zhi-Ming Yu, Ilya Belopolski, Nasser Alidoust, Hao Zheng, Tay-Rong Chang, Horng-Tay Jeng, S. A. Yang, Titus Neupert, Hsin Lin, and M. Zahid Hasan, “Nexus fermions in topological symmorphic crystalline metals,” Scientific Reports 7, 1688 (2017).
  • Shan Guan, Shao Ying Huang, Yugui Yao, and S. A. Yang, “Tunable hyperbolic dispersion and negative refraction in natural electride materials,” Phys. Rev. B 95, 165436 (2017).
  • Xian-Lei Sheng, Zhi-Ming Yu, Rui Yu, Hongming Weng, and S. A. Yang, “d-Orbital Topological Insulator and Semimetal in Antifluorite Cu2S Family: Contrasting Spin Helicities, Nodal Box, and Hybrid Surface States,” J. Phys. Chem. Lett. 8, 3506 (2017).
  • Chengcheng Xiao, Fang Wang, Yao Wang, S. A. Yang, Jianzhong Jiang, Ming Yang, Yunhao Lu, Shijie Wang, and Yuanping Feng, “Layer-dependent semiconductor-metal transition of SnO/Si(001) heterostructure and device application,” Scientific Reports 7, 2570 (2017).
  • Sai Gong, Wenhui Wan, Shan Guan, Bo Tai, Chang Liu, Botao Fu, S. A. Yang, and Yugui Yao, “Tunable Half-metallic Magnetism in Atom-thin Holey Two-dimensional C2N Monolayer,” J. Mater. Chem. C 5, 8424 (2017).
  • Yafei Ren, Ke Wang, Xinzhou Deng, S. A. Yang, Jeil Jung, and Zhenhua Qiao, “Gate tunable current partition in graphene based topological zero lines,” Phys. Rev. B 95, 245420 (2017).
  • Fang Wang, Zhaohui Ren, He Tian, S. A. Yang, Yanwu Xie, Yunhao Lu, Jianzhong Jiang, Gaorong Han, and Kesong Yang, “Interfacial Multiferroics of TiO2/PbTiO3 Heterostructure Driven by Ferroelectric Polarization Discontinuity,” ACS Appl. Mater. Interfaces 9, 1899 (2017).
  • Liyan Zhu, Shan-Shan Wang, Shan Guan, Ying Liu, Tingting Zhang, Guibin Chen, and S. A. Yang, “Blue Phosphorene Oxide: Strain-tunable Quantum Phase Transitions and Novel 2D Emergent Fermions,” Nano Lett. 16, 6548 (2016).
  • Xiaoming Zhang, Zhi-Ming Yu, Shan-Shan Wang, Shan Guan, Hui Ying Yang, Yugui Yao, and S. A. Yang, “Theoretical prediction of MoN2 monolayer as a high capacity electrode material for metal ion batteries,” J. Mater. Chem. A 4, 15224 (2016).
  • S. A. Yang, “Dirac and Weyl Materials: Fundamental Aspects and Some Spintronics Applications,” SPIN 06, 1640003 (2016) (Invited Review); arXiv:1609.06482.
  • Fuming Chen, Lu Guo, Xiaoming Zhang, Zhi Yi Leong, S. A. Yang, and Hui Ying Yang, “Nitrogen-doped graphene oxide for effectively removing boron ions from seawater,” Nanoscale 9, 326 (2017).
  • Fangfang Tu, Junping Hu, Jian Xie, Gaoshao Cao, Shichao Zhang, S. A. Yang, Xinbing Zhao, and Hui Ying Yang, “Au-Decorated Cracked Carbon Tube Arrays as Binder-Free Catalytic Cathode Enabling Guided Li2O2 Inner Growth for High-Performance Li-O2 Batteries,” Advanced Functional Materials 26, 7725 (2016)
  • Xiaoming Zhang, Junping Hu, Yingchun Cheng, Hui Ying Yang, Yugui Yao, and S. A. Yang, “Borophene as an extremely high capacity electrode material for Li-ion and Na-ion batteries,” Nanoscale 8, 15340 (2016).
  • Zhi-Ming Yu, Yugui Yao, and S. A. Yang, “Predicted Unusual Magnetoresponse in Type-II Weyl Semimetals,” Phys. Rev. Lett. 117, 077202 (2016).
  • Zhenhua Qiao, Yulei Han, Lei Zhang, Ke Wang, Xinzhou Deng, Hua Jiang, S. A. Yang, Jian Wang, and Qian Niu, “Anderson Localization from Berry-Curvature Interchange in Quantum Anomalous Hall Systems,” Phys. Rev. Lett. 117, 056802 (2016).
  • Yao Wang, Shan-Shan Wang, Yunhao Lu, Jianzhong Jiang, and S. A. Yang, “Strain-Induced Isostructural and Magnetic Phase Transitions in Monolayer MoN2,” Nano Lett. 16, 4576 (2016).
  • Yunhao Lu, Di Zhou, Guoqing Chang, Shan Guan, Weiguang Chen, Yinzhu Jiang, Jianzhong Jiang, Xue-sen Wang, S. A. Yang, Yuan Ping Feng, and Yoshiyuki Kawazoe, and Hsin Lin, “Multiple Unpinned Dirac Fermion States in 2D Materials with Phosphorene Lattice Structure,” npj Computational Materials 2, 16011 (2016).
  • Junping Hu, Bo Xu, Chuying Ouyang, Ying Zhang, and S. A. Yang, “Investigations on Nb2C monolayer as promising anode material for Li or non-Li ion batteries from first-principles calculations,” RSC Advances 6, 27467 (2016).
  • Chengyong Zhong, Yuanping Chen, Yuee Xie, S. A. Yang, Marvin L. Cohen, and Shengbai Zhang, “Towards Three-Dimensional Weyl-Surface Semimetals in Graphene Networks,” Nanoscale 8, 7232 (2016).
  • Yunhao Lu, Di Zhou, Tao Wang, S. A. Yang, and Jianzhong Jiang, “Topological Properties of Atomic Lead Film with Honeycomb Structure,” Scientific Reports 6, 21723 (2016).
  • Qingyun Zhang, S. A. Yang, Wenbo Mi, Yingchun Cheng, and Udo Schwingenschlögl, “Large Spin-Valley Polarization in Monolayer MoTe2 on Top of EuO(111),” Advanced Materials 28, 959 (2016).
  • Xianbo Xiao, Ying Liu, Zhengfang Liu, Guoping Ai, S. A. Yang, and Guanghui Zhou, “All-electric spin modulator based on a two-dimensional topological insulator,” Appl. Phys. Lett. 108, 032403 (2016).
  • Shan Guan, Yingchun Cheng, Chang Liu, Junfeng Han, Yunhao Lu, S. A. Yang, and Yugui Yao, “Effects of strain on electronic and optic properties of holey two-dimensional C2N crystals,” Appl. Phys. Lett. 107, 231904 (2015).
  • Gang Liu, Shi-Bing Liu, Bo Xu, Chuying Ouyang, H. Y. Song, Shan Guan, and S. A. Yang, “Multiple Dirac Points and Hydrogenation-Induced Magnetism of Germanene Layer on Al (111) Surface,” J. Phys. Chem. Lett. 6, 4936 (2015).
  • Junping Hu, Bo Xu, S. A. Yang, Shan Guan, Chuying Ouyang, and Yugui Yao, “2D Electrides as Promising Anode Materials for Na-Ion Batteries from First-Principles Study,” ACS Appl. Mater. Interfaces 7, 24016 (2015).
  • Liyan Zhu, Tingting Zhang, Ziming Sun, Jianhua Li, Guibin Chen, and S. A. Yang, “Thermal conductivity of biaxial-strained MoS2: sensitive strain dependence and size dependent reduction rate,” Nanotechnology 26, 465707 (2015).
  • Yuanping Chen, Yuee Xie, S. A. Yang, Hui Pan, Fan Zhang, Marvin L. Cohen, and Shengbai Zhang, “Nanostructured Carbon Allotropes with Weyl-like Loops and Points,” Nano Lett. 15, 6974 (2015).
  • S. A. Yang, Hui Pan, and Fan Zhang, “Chirality-dependent Hall Effect in Weyl Semimetals,” Phys. Rev. Lett. 115, 156603 (2015).
  • Hui Pan, Meimei Wu, Ying Liu, and S. A. Yang, “Electric control of topological phase transitions in Dirac semimetal thin films,” Scientific Reports 5, 14639 (2015).
  • S. A. Yang, Hui Pan, and Fan Zhang, “Buckled honeycomb lattice and unconventional magnetic response,” RSC Advances 5, 83350 (2015).
  • Shan Guan, S. A. Yang, Liyan Zhu, Junping Hu, Yugui Yao, “Electronic, Dielectric, and Plasmonic Properties of Two-Dimensional Electride Materials X2N (X=Ca, Sr): A First-Principles Study,” Scientific Reports 5, 12285 (2015).
  • Hui Pan, Xin Li, Fan Zhang, and S. A. Yang, “Perfect valley filter in a topological domain wall,” Phys. Rev. B Rapid Comm. 92, 041404(R) (2015).
  • Dazhi Hou, Gang Su, Yuan Tian, Xiaofeng Jin, S. A. Yang, and Qian Niu, “Multivariable Scaling for the Anomalous Hall Effect,” Phys. Rev. Lett. 114, 217203 (2015).
  • Yang Gao, S. A. Yang, and Qian Niu, “Geometrical effects in orbital magnetic susceptibility,” Phys. Rev. B 91, 214405 (2015).
  • Xianbo Xiao, S. A. Yang, Zhengfang Liu, Huili Li, and Guanghui Zhou, “Anisotropic Quantum Confinement Effect and Electric Control of Surface States in Dirac Semimetal Nanostructures,” Scientific Reports 5, 7898 (2015).
  • Hui Pan, Xin Li, Hua Jiang, Yugui Yao, and S. A. Yang, “Valley-polarized quantum anomalous Hall phase and disorder-induced valley-filtered chiral edge channels,” Phys. Rev. B 91, 045404 (2015).
  • Hui Pan, Xin Li, Zhenhua Qiao, Cheng-Cheng Liu, Yugui Yao, and S. A. Yang, “Topological metallic phases in spin–orbit coupled bilayer systems,” New J. Phys. 16, 123015 (2014).
  • Junping Hu, Bo Xu, Chuying Ouyang, S. A. Yang, and Yugui Yao, “Investigations on V2C and V2CX2 (X=F, OH) Monolayer as a Promising Anode Material for Li Ion Batteries from First-Principles Calculations,” J. Phys. Chem. C 118(42), 24274 (2014).
  • Cheng-Cheng Liu, Shan Guan, Zhigang Song, S. A. Yang, Jinbo Yang, and Yugui Yao, “Low-energy effective Hamiltonian for giant-gap quantum spin Hall insulators in honeycomb X-hydride/halide (X=N–Bi) monolayers,” Phys. Rev. B 90, 085431 (2014).
  • S. A. Yang, Hui Pan, and Fan Zhang, “Dirac and Weyl Superconductors in Three Dimensions,” Phys. Rev. Lett. 113, 046401 (2014).
  • Yang Gao, S. A. Yang, and Qian Niu, “Field Induced Positional Shift of Bloch Electrons and Its Dynamical Implications,” Phys. Rev. Lett. 112, 166601 (2014).
  • Jin-Jian Zhou, Wanxiang Feng, Ying Zhang, S. A. Yang, and Yugui Yao, “Engineering Topological Surface States and Giant Rashba Spin Splitting in BiTeI/Bi2Te3 Heterostructures,” Scientific Reports 4, 3841 (2014).
  • Tianyi Cai, S. A. Yang, Xiao Li, Fan Zhang, Junren Shi, Wang Yao, and Qian Niu, “Magnetic control of the valley degree of freedom of massive Dirac fermions with application to transition metal dichalcogenides,” Phys. Rev. B 88, 115140 (2013).
  • Guobao Zhu, S. A. Yang, Cheng Fang, Wu Ming Liu, and Yugui Yao, “Theory of orbital magnetization in disordered systems,” Phys. Rev. B 86, 214415 (2012).
  • S. A. Yang, Zhenhua Qiao, Yugui Yao, Junren Shi, and Qian Niu, “Singular effects of spin-flip scattering on gapped Dirac fermions,” Europhys. Lett95, 67001 (2011).
  • S. A. Yang, Hui Pan, Yugui Yao, and Qian Niu, “Scattering universality classes of side jump in anomalous Hall effect,” Phys. Rev. B 83, 125122 (2011).
  • Zhenhua Qiao, S. A. Yang, Bin Wang, Yugui Yao, and Qian Niu, “Spin-polarized and valley-associated edge modes in graphene nanoribbons,” Phys. Rev. B 84, 035431 (2011).
  • S. A. Yang, Qian Niu, D. A. Pesin, and Allan H. MacDonald, “Theory of I-V characteristics of magnetic Josephson junctions,” Phys. Rev. B 82, 184402 (2010).
  • S. A. Yang, Geoffrey S. D. Beach, Carl Knutson, Di Xiao, Zhenyu Zhang, Maxim Tsoi, Qian Niu, Allan H. MacDonald, and James L. Erskine, “Topological electromotive force from domain-wall dynamics in a ferromagnet,” Phys. Rev. B 82, 054410 (2010).
  • Zhenhua Qiao, S. A. Yang, Wanxiang Feng, Wong-Kong Tse, Jun Ding, Yugui Yao, Jian Wang, and Qian Niu, “Quantum anomalous Hall effect in graphene from Rashba and exchange effects,” Phys. Rev. B Rapid Comm82, 161414(R) (2010).
  • S. A. Yang, Xiaoqin Li, A. D. Bristow, and J. E. Sipe, “Second harmonic generation from tetragonal centrosymmetric crystals,” Phys. Rev. B 80, 165306 (2009).
  • Wang Yao, S. A. Yang, and Qian Niu, “Edge States in Graphene: From Gapped Flat-Band to Gapless Chiral Modes,” Phys. Rev. Lett102, 096801 (2009).
  • S. A. Yang, Geoffrey S. D. Beach, Carl Knutson, Di Xiao, Qian Niu, Maxim Tsoi, and James L. Erskine, “Universal Electromotive Force Induced by Domain Wall Motion,” Phys. Rev. Lett102, 067201 (2009).

Conference Talks and Seminars

  • Invited Speaker, “Circumventing the no-go theorem,” The 15th China-Singapore Joint Symposium on Research Frontiers in Physics, Guangzhou, Nov. 22, 2019.
  • Seminar Speaker, “Anomalous transverse shift in Andreev reflection,” Guangzhou University, Nov. 21, 2019.
  • Invited Speaker, “Using Topology and Symmetry for Valleytronics Design,” 2019 International Workshop on Emerging Electronic Materials and Devices, Hunan, Jul. 19, 2019.
  • Invited Speaker, “Hourglass Weyl loops in 2D,” The 5th Conference on Condensed Matter Physics, Liyang, Jun. 29, 2019.
  • Seminar Speaker, “Novel Types of Nodal-Loop Metals,” Nanyang Technological University, Feb. 25, 2019.
  • Invited Speaker, “Dirac Semimetal Thin Films: A Platform for Topological Transistors,” 2nd SG-SPIN/Tohoku Workshop on Spintronics, Singapore, Feb. 22, 2019.
  • Seminar Speaker, “Quadratic Contact Points & Quadratic/Cubic Nodal Lines,” Nanjing Normal University, Oct. 25, 2018.
  • Invited Speaker, “Anomalous Positional Shift in Andreev Reflection,” The 14th China-Singapore Joint Symposium on Research Frontiers in Physics, Shanghai, Sep. 24, 2018.
  • Seminar Speaker, “Quadratic Contact Points & Quadratic/Cubic Nodal Lines,” ShanghaiTech University, Sep. 23, 2018.
  • Invited Speaker, “Nodal Loop and Nodal Surface Metals,” The 4th Conference on Condensed Matter Physics, Shanghai, Jul. 7, 2018.
  • Invited Speaker, “Some New Aspects of Topological Semimetals,” The 4th WHU Summer Theory Institute, Wuhan, Jul. 3, 2018.
  • Seminar Speaker, “Topological Nodal-Loop and Nodal-Surface Metals,” High Magnetic Field Laboratory of the Chinese Academy of Sciences, Hefei, Jun. 13, 2018.
  • Plenary Speaker, “Nonsymmorphic Topological Metals,” The 15th National Conference on Magnetism, Apr. 14, 2018.
  • Seminar Speaker, “Zoo of Nodal-loop Metals,” Nanjing University, Mar. 19, 2018.
  • Plenary Speaker, “2D and 3D Nonsymmorphic Topological Metals,” Institute of Physics of Singapore 2018 Meeting, Nanyang Technological University, Mar. 7, 2018.
  • Invited Speaker, “Anomalous Positional Shift in Interface Scattering,” Tohoku/SG-SPIN Workshop on Spintronics, Sendai, Feb. 21, 2018.
  • Seminar Speaker, “Elemental Ferroelectricity and Tunable Ferroelectricity in 2D,” National Taiwan University, Jan. 24, 2018.
  • Invited Speaker, “2D Spin-Orbit Dirac Point, Hourglass Dirac loop, and Dirac Chain,” 2018 NCTS Annual Meeting in Condensed Matter Physics, Hsinchu, Jan. 21, 2018.
  • Invited Speaker, “Transverse Shift in Andreev Reflection,” International Young Talents Forum at Sichuan University, Chengdu, Dec. 20, 2017.
  • Invited Speaker, “2D Spin-Orbit Dirac Point in Monolayer HfGeTe and Beyond,” The 3rd International Conference on 2D Materials and Technology, Singapore, Dec. 12, 2017.
  • Seminar Speaker, “Artificial Gravity, Astrophysical Analogues, and Topological Phase Transitions in Strained Topological Semimetals,” University of Electronic Science and Technology of China, Sep. 5, 2017.
  • Seminar Speaker, “Artificial Gravity, Astrophysical Analogues, and Topological Phase Transitions in Strained Topological Semimetals,” Xi’an Jiaotong University, Sep. 1, 2017.
  • Seminar Speaker, “Magnetic and Electric Ordered 2D Materials,” Northwestern Polytechnical University, Aug. 30, 2017.
  • Seminar Speaker, “Novel Optical Response in Topological Materials,” Nanjing Normal University, Jul. 17, 2017.
  • Seminar Speaker, “On d-orbital Topological Material & First Elemental Ferroelectric Material,” Beijing Institute of Technology, Jul. 15, 2017.
  • Invited Speaker, “Dirac Superconductor & Topological Phase Transitions in Dirac semimetal,” The 7th ICQs Annual Workshop, Beijing, Jul. 13, 2017.
  • Invited Speaker, “Novel Types of Topological Semimetals and Topological Phase Transitions,” The 3rd Conference on Condensed Matter Physics, Shanghai, Jun. 25, 2017.
  • Seminar Speaker, “Topological Carbon and Hourglass Dirac Chain Metal,” Nanjing University, Jun. 23, 2017.
  • Speaker, “Controlled Quantum Phase Transitions in Novel 2D Materials,” ICMAT 2017 Conference, Singapore, Jun. 21, 2017.
  • Seminar Speaker, “Electride Materials for Plasmonic, Energy Storage, and Optical Applications,” National University of Singapore, Apr. 21, 2017.
  • Invited Speaker, “Novel Quantum Phase Transitions Generated by Strain,” The 10th International Conference on Computational Physics, Macao, Jan. 18, 2017.
  • Seminar Speaker, “Novel Dirac/Weyl materials and magnetoresponse of type-II Weyl semimetals,” South University of Science and Technology of China, Aug. 9, 2016.
  • Speaker, “Topological Semimetals and Valley-Dependent Electronics,” ICPS 2016, Beijing, Aug. 4, 2016.
  • Speaker, “Reversible Bonding-Nonbonding Isostructural and Magnetic Phase Transitions in 2D Material,” The 2nd Conference on Condensed Matter Physics, Nanjing, Jul. 21, 2016.
  • Speaker, “Unusual Magneto-Response of Type-II Weyl Semimetals,” The 2nd Conference on Condensed Matter Physics, Nanjing, Jul. 20, 2016.
  • Invited Speaker, “Dirac and Weyl Materials: Fundamental Aspects and Some Applications,” 2016 International Workshop on Emerging Electronic Materials and Devices, Hefei, Jul. 10, 2016.
  • Speaker, “Topological Semimetals in Nanostructured Carbon Materials,” IUMRS-ICEM 2016, Singapore, Jul. 6, 2016.
  • Seminar Speaker, “Valleytronics, Chiral Fermions, and Topological Materials,” Nanjing Normal University, May 23, 2016.
  • Seminar Speaker, “Dirac Materials: Fundamentals and Some Potential Applications,” Zhejiang University, May 20, 2016.
  • Seminar Speaker, “Topological Materials and Emergent Chiral Fermions,” Nanjing Tech University, May 19, 2016.
  • Poster Presentation, “Unusual Properties of 2D Electride Materials,” The Croucher Advanced Study Institute, The University of Hong Kong, May 5, 2016.
  • Invited Speaker, “Topological Semimetals and Chirality-Dependent Electron Dynamics,” Institute of Physics of Singapore 2016 Meeting, SUTD, Mar. 7, 2016.
  • Invited Speaker, “Dirac Valleytronics and Topological Materials,” NTU/UniLu Joint Workshop on Topological Phases, Nanyang Technological University, Jan. 18, 2016.
  • Seminar Speaker, “Topological Materials and Valleytronics,” South University of Science and Technology of China, Aug. 14, 2015.
  • Invited Speaker, “2D Electride Materials for Optical, Plasmonic, and Energy Storage Applications,” 1st Conference of Condensed Matter Physics, Beijing, Jul. 16, 2015.
  • Invited Speaker, “Electronic, Dielectric, and Plasmonic Properties of 2D Electride Materials: Ca2N and Sr2N,” ICMAT 2015 & IUMRS-ICA 2015, Singapore, Jul. 3, 2015.
  • Speaker, “Topological Properties of Two-dimensional Spin-orbit Coupled Materials,” ICMAT 2015 & IUMRS-ICA 2015, Singapore, Jul. 2, 2015.
  • Seminar Speaker, “Some Geometrical and Topological Aspects in Valleytronics,” International Center for Quantum Materials, Peking University, May 21, 2015.
  • Seminar Speaker, “Geometrical and Topological Valley Physics in Solid State Materials,” Nanjing University of Science and Technology, May 11, 2015.
  • Seminar Speaker, “Geometrical and Topological Valley Physics in Solid State Materials,” Central South University, May 7, 2015.
  • Seminar Speaker, “Geometrical and Topological Valley Physics in Solid State Materials,” Hunan Normal University, May 6, 2015.
  • Invited Speaker, “Geometrical and Topological Aspects in Valley Physics,” Institute of Physics of Singapore 2015 Conference, Nanyang Technological University, Mar. 3, 2015.
  • Invited Speaker, “Dirac and Weyl Superconductors in Three Dimensions,” The 9th International Conference on Computational Physics, National University of Singapore, Jan. 10, 2015.
  • Seminar Speaker, “Novel Topological Phases in Condensed Matter,” NUS Surface Science Journal Club, Oct. 16, 2014.
  • Speaker, “Dirac and Weyl Superconductors in Three Dimensions,” 18th National Conference on Condensed Matter Theory and Statistical Physics, Chongqing University, Jul. 29, 2014.
  • Speaker, “Novel Topological Phases in 2D Buckled Honeycomb Lattices,” 18th National Conference on Condensed Matter Theory and Statistical Physics, Chongqing University, Jul. 29, 2014.
  • Seminar Speaker, “Some Topological Effects in Condensed Matter Physics,” Xiangtan University, Jul. 23, 2014.
  • Invited Speaker, “Dirac and Weyl Superconductors in Three Dimensions,” 13th International Conference on Condensed Matter Theory and Computational Materials Science, Sichuan University, Jul. 15, 2014.
  • Poster Presentation, “Dirac and Weyl Superconductors in Three Dimensions,” OCPA8 Conference, Nanyang Technological University, Jun. 24, 2014.
  • Invited Speaker, “Dirac and Weyl Superconductors in Three Dimensions,” International Forum for Young Scholars, University of Electronic Science and Technology of China, Apr. 1, 2014.
  • Seminar Speaker, “Topological Effects in Condensed Matter: a Few Topics,” South China Normal University, Mar. 11, 2014.
  • Seminar Speaker, “Anomalous Hall Effect: the correct scaling formula,” Fudan University, Dec. 23, 2013.
  • Invited Speaker, “Magnetic Control of Valley Degree of Freedom,” The Hong Kong Forum of Physics: Novel Quantum Systems, The University of Hong Kong, Dec. 12, 2013.
  • Seminar Speaker, “Some Research Topics in Condensed Matter Physics,” Beihang University, Oct. 10, 2013.
Research Interest

  • Condensed Matter Physics
  • Topology in Solid State Physics
  • Computational Material Physics
  • Transport Theory
  • Spintronics, Magnetic Devices
Group Openings

  • Currently recruiting PhD students for 2021 Fall Intake. If interested, please email Prof. Yang directly.
  • Postdoc Research Fellow position available.
  • Research Lab for Quantum Materials