189 citations · 924 across the 24 of their papers we have counts for
24 papers
Higher-order Topological Insulators and Semimetals in Three Dimensions without Crystalline Counterparts
Yu-Feng Mao, Yu-Liang Tao, Jiong-Hao Wang +2
Quasicrystals allow for symmetries that are impossible in crystalline materials, such as eight-fold rotational symmetry, enabling the existence of novel higher-order topological in…
Wannier-Stark localization in one-dimensional amplitude-chirped lattices
Qi-Bo Zeng, Bo Hou, Han Xiao
We study the Wannier-Stark (WS) localization in one-dimensional amplitude-chirped lattices with the th onsite potential modulated by a function , where is the…
Gaussian eigenstate pinning in non-Hermitian quantum mechanics
Qi-Bo Zeng, Rong Lü
We study a one-dimensional system subjected to a linearly varying imaginary vector potential, which is described by the single-particle continuous Schrödinger equation and is analy…
Scaling of Berry-curvature monopole dominated large linear positive magnetoresistance
Shen Zhang, Yibo Wang, Qingqi Zeng +15
The linear positive magnetoresistance (LPMR) is a widely observed phenomenon in topological materials, which is promising for potential applications on topological spintronics. How…
Real spectra and phase transition of skin effect in nonreciprocal systems
Qi-Bo Zeng, Rong Lü
We study the one-dimensional nonreciprocal lattices with real nearest neighboring hopping and find that the energy spectra under open boundary conditions can be entirely real or im…
Evolution of spectral topology in one-dimensional long-range nonreciprocal lattices
Qi-Bo Zeng, Rong Lü
We investigate the spectral topology of one-dimensional lattices where the nonreciprocal hoppings within the nearest neighboring sites are the same. For the purely off-diagon…
Pressure-Driven Magneto-Topological Phase Transition in a magnetic Weyl semimetal
Qingqi Zeng, Hongyi Sun, Jianlei Shen +9
The co-occurrence of phase transitions with local and global order parameters, such as the entangled magnetization and topological invariant, is attractive but has been seldom real…
Real spectra, Anderson localization, and topological phases in one-dimensional quasireciprocal systems
Qi-Bo Zeng, Rong Lü
We introduce the one-dimensional quasireciprocal lattices where the forward hopping amplitudes between nearest neighboring sites are chosen to be a random permutat…
On the anomalous low-resistance state and exceptional Hall component in hard-magnetic Weyl nanoflakes
Qingqi Zeng, Gangxu Gu, Gang Shi +7
Magnetic topological materials, which combine magnetism and topology, are expected to host emerging topological states and exotic quantum phenomena. In this study, with the aid of…
Topological phases and Anderson localization in off-diagonal mosaic lattices
Qi-Bo Zeng, Rong Lü
We introduce a one-dimensional lattice model whose hopping amplitudes are modulated for equally spaced sites. Such mosaic lattice exhibits many interesting topological and localiza…
Magnetic-field modulation of topological electronic states and emergent magneto-transport in a magnetic Weyl semimetal
Jianlei Shen, Jiacheng Gao, Changjiang Yi +16
The modulation of topological electronic states by an external magnetic field is highly desired for condensed matter physics. Schemes to achieve this have been proposed theoretical…
Topological Superconductors in One-Dimensional Mosaic Lattices
Qi-Bo Zeng, Rong Lü, Li You
We study topological superconductor in one-dimensional (1D) mosaic lattice whose on-site potentials are modulated for equally spaced sites. When the system is topologically nontriv…
Ultra-efficient magnetism modulation in a Weyl ferromagnet by current-assisted domain wall motion
Qiuyuan Wang, Yi Zeng, Kai Yuan +10
Flexible and efficient manipulation of magnetic configurations can be challenging. In the design of practical devices, achieving a high effective magnetic field with a low working…
33% Giant Anomalous Hall Current Driven by both Intrinsic and Extrinsic Contributions in Magnetic Weyl Semimetal Co3Sn2S2
Jianlei Shen, Qingqi Zeng, Shen Zhang +8
Anomalous Hall effect (AHE) can be induced by intrinsic mechanism due to the band Berry phase and extrinsic one arising from the impurity scattering. The recently discovered magnet…
Hinge solitons in three-dimensional second-order topological insulators
Yu-Liang Tao, Ning Dai, Yan-Bin Yang +2
A second-order topological insulator in three dimensions refers to a topological insulator with gapless states localized on the hinges, which is a generalization of a traditional t…
On the anisotropies of magnetization and electronic transport of magnetic Weyl semimetal Co3Sn2S2
Jianlei Shen, Qingqi Zeng, Shen Zhang +8
Co3Sn2S2, a quasi-two-dimensional system with kagome lattice, has been found as a magnetic Weyl semimetal recently. In this work, the anisotropies of magnetization and transport pr…
Winding Numbers and Generalized Mobility Edges in Non-Hermitian Systems
Qi-Bo Zeng, Yong Xu
The Aubry-André-Harper (AAH) model with a self-dual symmetry plays an important role in studying the Anderson localization. Here we find a self-dual symmetry determining the quantu…
Higher-order topological insulators and semimetals in generalized Aubry-André-Harper models
Qi-Bo Zeng, Yan-Bin Yang, Yong Xu
Higher-order topological phases of matter have been extensively studied in various areas of physics. While the Aubry-André-Harper model provides a paradigmatic example to study top…
Topological Phases in Non-Hermitian Aubry-André-Harper Models
Qi-Bo Zeng, Yan-Bin Yang, Yong Xu
Topological phases have recently witnessed a rapid progress in non-Hermitian systems. Here we study a one-dimensional non-Hermitian Aubry-André-Harper model with imaginary periodic…
Quench dynamics in the Aubry-André-Harper model with \textit{p}-wave superconductivity
Qi-Bo Zeng, Shu Chen, Rong Lü
The Anderson localization phase transition in the Aubry-André-Harper (AAH) model with \textit{p}-wave superconducting (SC) pairing is numerically investigated by suddenly changing…
Anderson localization in the Non-Hermitian Aubry-André-Harper model with physical gain and loss
Qi-Bo Zeng, Shu Chen, Rong Lü
We investigate the Anderson localization in non-Hermitian Aubry-André-Harper (AAH) models with imaginary potentials added to lattice sites to represent the physical gain and loss d…
Transport through a non-Hermitian Aharonov-Bohm ring with physical gain and loss
Qi-Bo Zeng, Shu Chen, Rong Lü
We investigate a non-Hermitian Aharonov-Bohm (AB) ring system with a quantum dot (QD) embedded in each of its two arms. The energy levels of the QDs are complex in order to take in…
Generalized Aubry-André-Harper model with p-wave superconducting pairing
Qi-Bo Zeng, Shu Chen, Rong Lü
We investigate a generalized Aubry-André-Harper (AAH) model with p-wave superconducting pairing. Both the hopping amplitudes between the nearest neighboring lattice sites and the o…
Transport through a quantum dot coupled to two Majorana bound states
Qi-Bo Zeng, Shu Chen, L. You +1
We investigate electron transport inside a ring system composed of a quantum dot (QD) coupled to two Majorana bound states confined at the ends of a one-dimensional topological sup…