106 citations · 843 across the 33 of their papers we have counts for
31 papers · 1 filter
Spin Seebeck Effect in Normal-Metal--Chiral-Insulator Heterostructure
Jiayan Zhang, Gaoyang Li, Gaomin Tang +1
Phonons can carry angular momentum and exhibit chirality through the circular polarization of atomic motion. This enables a phonon-mediated spin Seebeck effect (SSE) via the conver…
Electromechanical Switching and Momentum-Selective Transport in Geometry-Defined Blue Phosphorus Homojunctions
Zewen Wu, Min Zhou, Yanxia Xing +1
Developing intrinsic homojunctions without chemical heterogeneity remains a key challenge in future two - dimensional devices. Here, we report a geometry - defined metal--semicondu…
Specular-Andreev reflection and Andreev interference in an Ising superconductor junction
Gaoyang Li, Sourabh Patil, Yanxia Xing +2
Being resilient to magnetic field, Ising superconductor serves as an exceptional platform for studying the interplay between superconductivity and magnetism. In this Letter, we fir…
Quantum nonlinear ac transport theory at low frequency
Lei Zhang, Fuming Xu, Jian Chen +2
Based on the nonequilibrium Green's function (NEGF), we develop a quantum nonlinear theory to study time-dependent ac transport properties in the low frequency and nonlinear bias v…
High-efficiency photoelectric detector based on a p-n homojunction of monolayer black phosphorus
Xueying Zuo, Jingjing Cheng, Yulin Liang +2
We numerically investigate the high-efficiency photovoltaic effect in lateral p-n homojunction based on monolayer black phosphorus (MBP) by using the non-equilibrium Green's functi…
Evolution of individual quantum Hall edge states in the presence of disorder
Kai Tong Wang, Fuming Xu, Yanxia Xing +1
Employing the Bloch eigenmode matching approach, we numerically study the evolution of individual quantum Hall edge states with respect to disorder. As shown by the two-parameter r…
Influence of magnetic disorders on Quantum Anomalous Hall Effect in Magnetic Topological Insulator Films beyond the two-dimensional limit
Xing Yanxia, Cheung King Tai, Xu Fuming +3
Quantum anomalous Hall effect (QAHE) has been experimentally realized in magnetic topological insulator (MTI) thin films fabricated on magnetically doped (Bi,Sb)2Te3. In a MTI thin…
Geometric Effect on Quantum Anomalous Hall States in Magnetic Topological Insulators
Yanxia Xing, Fuming Xu, Qing-feng Sun +2
An intriguing observation on the quantum anomalous Hall effect (QAHE) in magnetic topological insulators (MTIs) is the dissipative edge states, where quantized Hall resistance is a…
Crossed Andreev effects in two-dimensional quantum Hall systems
Zhe Hou, Yanxia Xing, Ai-Min Guo +1
We study the crossed Andreev effects in two-dimensional conductor/superconductor hybrid systems under a perpendicular magnetic field. Both a graphene/superconductor hybrid system a…
Short time dynamics of molecular junctions after projective measurement
Gaomin Tang, Yanxia Xing, Jian Wang
In this work, we study the short time dynamics of a molecular junction described by Anderson-Holstein model using full-counting statistics after projective measurement. The couplin…
Numerical study of parametric pumping current in mesoscopic systems in the presence of magnetic field
Fuming Xu, Yanxia Xing, Jian Wang
We numerically study the parametric pumped current when magnetic field is applied both in the adiabatic and non-adiabatic regimes. In particular, we investigate the nature of pumpe…
Nonlocal transport in a hybrid two-dimensional topological insulator
Yanxia Xing, Qing-feng Sun
We study nonlocal resistance in an H-shaped two-dimensional HgTe/CdTe quantum well consist of injector and detector, both of which can be tuned in the quantum spin Hall or metallic…
Coherent Single Spin Source based on topological insulator
Yanxia Xing, Zhong-liu Yang, Qing-feng Sun +1
We report on the injection of quantized pure spin current into quantum conductors. In particular, we propose an on demand single spin source generated by periodically varying the g…
Disorder induced quantized conductance with fractional value and universal conductance fluctuation in three-dimensional topological insulators
Lei Zhang, Jianing Zhuang, Yanxia Xing +1
We report a theoretical investigation on the conductance and its fluctuation of three-dimensional topological insulators (3D TI) in and in the presence of dis…
Topological Anderson insulator phenomena
Yanxia Xing, Lei Zhang, Jian Wang
We study the nature of the disorder-induced quantized conductance, i.e., the phenomena of topological Anderson insulator (TAI) induced in HgTe/CdTe semiconductor quantum well. The…
The parity of specular Andreev reflection under mirror operation in zigzag graphene ribbon
Yanxia Xing, Jian Wang, Qing-feng Sun
It is known that the parity of reflection amplitude can either be even or odd under the mirror operation. Up to now, all the parities of reflection amplitude in the one-mode energy…
The focusing of electron flow in a bipolar Graphene ribbon with different chiralities
Yanxia Xing, Jian Wang, Qing-feng Sun
The focusing of electron flow in a symmetric p-n junction (PNJ) of graphene ribbon with different chiralities is studied. Considering the PNJ with the sharp interface, in a armchai…
Nernst and Seebeck effect in a graphene nanoribbon
Yanxia Xing, Qing-feng Sun, Jian Wang
The thermoelectric power, including the Nernst and Seebeck effects, in graphene nanoribbon is studied. By using the non-equilibrium Green function combining with the tight-binding…
Universal Conductance Fluctuations in Mesoscopic Systems with Superconducting Leads: Beyond the Andreev Approximation
Yanxia Xing, Jian Wang
We report our investigation of the sample to sample fluctuation in transport properties of phase coherent normal metal-superconductor hybrid systems. Extensive numerical simulation…
First-principles investigation of dynamical properties of molecular devices under a steplike pulse
Yanxia Xing, Bin Wang, Jian Wang
We report a computationally tractable approach to first principles investigation of time-dependent current of molecular devices under a step-like pulse. For molecular devices, all…
Controllable Andreev retroreflection and specular Andreev reflection in a four-terminal graphene-superconductor hybrid system
Shu-guang Cheng, Yanxia Xing, Jian Wang +1
We report the investigation of electron transport through a four-terminal graphene-superconductor hybrid system. Due to the quantum interference of the reflected holes from two gra…
Transient dynamics of molecular devices under step-like pulse bias
Bin Wang, Yanxia Xing, Lei Zhang +1
We report first principles investigation of time-dependent current of molecular devices under a step-like pulse.Our results show that although the switch-on time of the molecular d…
Spin Bias Measurement Based on a Quantum Point Contact
Yanxia Xing, Qing-feng Sun, Jian Wang
Electron charge transport through a quantum point contact (QPC) driven by an asymmetric spin bias is studied. A large charge current is induced when the transmission coefficient of…
Spin Nernst effect and Nernst effect in two-dimensional electron systems
Shu-guang Cheng, Yanxia Xing, Qing-feng Sun +1
We study the Nernst effect and the spin Nernst effect, that a longitudinal thermal gradient induces a transverse voltage and a spin current. A mesoscopic four-terminal cross-bar de…