50 citations · 430 across the 34 of their papers we have counts for
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Resonant-impurity scanning tunneling spectroscopy in altermagnets: dual Fano resonance and Landau-quantization-induced nodal spin contrast
Yuan Hong, Zhigang Wang, Zhen-Guo Fu +4
Using a Green's-function formalism, we study the spin-resolved local spectral function of a resonant impurity coupled to a two-dimensional % -wave altermagnetic substrate. It is…
Tunable Fano and Dicke effects in quantum transport of double quantum dots sandwiched between topological insulators
Yuan Hong, Zhen-Guo Fu, Zhou-Wei-Yu Chen +4
We study the quantum transport in double quantum dots (DQD) sandwiched between surfaces of topological insulator (TI) BiTe, which possess strong spin-orbit coupling (SO…
Anisotropic Fabry-Pérot resonant states confined within nano-steps on the topological insulator surface
Zhen-Guo Fu, Ping Zhang, Mu Chen +3
The peculiar nature of topological surface states, such as absence of backscattering, weak anti-localization, and quantum anomalous Hall effect, has been demonstrated mainly in bul…
The effect of the warping term on the fractional quantum Hall states in topological insulators
Fawei Zheng, Zhigang Wang, Zhen-Guo Fu +1
The warping effect on the fractional quantum Hall (FQH) states in topological insulators is studied theoretically. Based on the perturbed wavefunctions, which include contributions…
Fractional quantum Hall effect of topological surface states under a strong tilted magnetic field
Fawei Zheng, Zhigang Wang, Zhen-Guo Fu +1
The fractional quantum Hall effect (FQHE) of topological surface-state particles under a tilted strong magnetic field is theoretically studied by using the exact diagonalization me…
Pseudo-magnetoexcitons in strained graphene bilayers without external magnetic fields
Zhigang Wang, Zhen-Guo Fu, Fawei Zheng +1
The structural and electronic properties of graphene leads its charge carriers to behave like relativistic particles, which is described by a Dirac-like Hamiltonian. Since graphene…
Theory of multiple magnetic scattering for quasiparticles on a gapless topological insulator surface
Zhen-Guo Fu, Ping Zhang, Zhigang Wang +2
We develop a general low-energy multiple-scattering partial-wave theory for gapless topological insulator (TI) surfaces in the presence of magnetic impurities. As applications, we…
Superfluidity and effective mass of magnetoexcitons in topological insulator bilayers: Effect of inter-Landau-level Coulomb interaction
Zhigang Wang, Zhen-Guo Fu, Ping Zhang
The effective mass and superfluidity-normal phase transition temperature of magnetoexcitons in topological insulator bilayers are theoretically investigated. The intra-Landau-level…
Magnetoexcitons and optical absorption of bilayer-structured topological insulators
Zhigang Wang, Zhen-Guo Fu, Ping Zhang
Optical absorption properties of magnetoexcitons in topological insulator bilayers under a strong magnetic field are theoretically studied. A general analytical formula of optical…
Multiple scattering theory of quasiparticles on a topological insulator surface
Zhen-Guo Fu, Ping Zhang, Zhigang Wang +1
A general partial-wave multiple scattering theory for scattering from cylindrically symmetric potentials on a topological insulator (TI) surface is developed. As an application, th…
Excitonic condensation for the surface states of topological insulator bilayers
Zhigang Wang, Ningning Hao, Zhen-Guo Fu +1
We propose a generic topological insulator bilayer (TIB) system to study the excitonic condensation with self-consistent mean-field (SCMF) theory. We show that the TIB system prese…
Quantum Corrals and Quantum Mirages on the Surface of a Topological Insulator
Zhen-Guo Fu, Ping Zhang, Zhigang Wang +1
We study quantum corrals on the surface of a topological insulator (TI). Different resonance states induced by nonmagnetic (NM), antiferromagnetic (AFM), and ferromagnetic (FM) cor…
Chiral topological excitonic insulator in semiconductor quantum wells
Ningning Hao, Ping Zhang, Jian Li +3
We present a scheme to realize the chiral topological excitonic insulator in semiconductor heterostructures which can be experimentally fabricated with a coupled quantum well adjac…
Magnetic quantum oscillations of the topological insulator surface states
Zhigang Wang, Zhen-Guo Fu, Shuang-Xi Wang +1
We study quantum oscillations of the magnetization in BiSe(111) surface system in the presence of a perpendicular magnetic field. The combined spin-chiral Dirac cone an…
Orbital magnetization of the electron gas on a two-dimensional kagome lattice under a perpendicular magnetic field
Zhigang Wang, Zi-Gang Yuan, Zhen-Guo Fu +2
The orbital magnetization of the electron gas on a two-dimensional kagome lattice under a perpendicular magnetic field is theoretically investigated. The interplay between the latt…
Fractional topological excitations and quantum phase transition in a bilayer 2DEG adjacent to a superconductor film
Ningning Hao, Wei Zhang, Zhigang Wang +2
We study a bilayer two-dimension-electron-gas (2DEG) adjacent to a type-II superconductor thin film with a pinned vortex lattice. We find that with increasing interlayer tunneling,…
Quantum spin Hall effect and spin-charge separation in a kagome lattice
Zhigang Wang, Ping Zhang
A two-dimensional kagome lattice is theoretically investigated within a simple tight-binding model, which includes the nearest neighbor hopping term and the intrinsic spin-orbit in…
Topological winding properties of spin edge states in Kane-Mele graphene model
Zhigang Wang, Ningning Hao, Ping Zhang
We study the spin edge states in the quantum spin-Hall (QSH) effect on a single-atomic layer graphene ribbon system with both intrinsic and Rashba spin-orbit couplings. The Harper…
Magnetization of Two Dimensional Heavy Holes with Boundaries in a Perpendicular Magnetic Field
Cheng Fang, Zhigang Wang, Shu-Shen Li +1
The magnetization of heavy holes in III-V semiconductor quantum wells with Rashba spin-orbit coupling (SOC) in an external perpendicular magnetic field is theoretically studied. We…
Magnetization in two-dimensional electron gas in a perpendicular magnetic field: the roles of edge states and spin-orbit coupling
Zhigang Wang, Wei Zhang, Ping Zhang
We study the de Haas--van Alphen (dHvA) oscillations in the magnetization of a two-dimensional electron gas (2DEG) under the influence of the edge states and/or the Rashba spin-orb…
Spin Hall effect in the kagome lattice with Rashba spin-orbit interaction
Guocai Liu, Ping Zhang, Zhigang Wang +1
We study the spin Hall effect in the kagomé lattice with Rashba spin-orbit coupling. The conserved spin Hall conductance (see text) and its two components, i.e., the c…
Topological edge states and quantum Hall effect in the Haldane model
Ningning Hao, Ping Zhang, Zhigang Wang +2
We study the topological edge states of the Haldane's graphene model with zigzag/armchair lattice edges. The Harper equation for solving the energies of the edge states is derived.…
Quantum blockade and loop current induced by a single lattice defect in graphene nanoribbons
Jie-Yun Yan, Ping Zhang, Bo Sun +4
We investigate theoretically the electronic transport properties in narrow graphene ribbons with an adatom-induced defect. It is found that the lowest conductance step of a metalli…
Edge states and the integer quantum Hall effect of spin-chiral ferromagnetic kagome lattice with a general spin coupling
Zhigang Wang, Ping Zhang
The chiral edge states and the quantized Hall conductance (QHC) in the two-dimensional kagomé lattice with spin anisotropies included in a general Hund's coupling region are studie…