36 citations · 142 across the 23 of their papers we have counts for
23 papers
Lindbladian Phase Geometry and Hall Transport in Open Bloch Systems
Zhihao Jiang, Longjun Xiang, Jian Wang
Quantum geometry underlies a wide range of transport phenomena in Bloch systems. How quantum-geometric transport is modified when Bloch electrons are coupled to an environment, how…
Dissipationless Photovoltaic Spin Hall Effect from Spin-current Vorticity
Longjun Xiang, Jian Wang
Spin-current vorticity (SCV) can generate the linear magnetic spin Hall effect [\href{https://doi.org/10.1038/s41586-018-0853-0}{Nature \textbf{565}, 627 (2019)}], yet its role in…
Third-order intrinsic anomalous Hall effect as a transport fingerprint of altermagnets
Longjun Xiang, Hao Jin, Jian Wang
The intrinsic anomalous Hall effect (IAHE) provides a powerful transport fingerprint of quantum magnets, with its linear and second-order responses distinguishing ferromagnets and…
Curvature-Flux Representation of Local Dirac-Node Topology from Non-Hermitian Zeeman Quantum Geometry
Rongjie Cui, Longjun Xiang, Fuming Xu +1
Local Dirac-node topology is usually described by a winding number or Berry phase, whereas curvature-flux formulations are commonly associated with global band topology. Here we sh…
Quantum Geometric Entropy Production and Entropy Hall Effect
Longjun Xiang, Jinxiong Jia, Jian Wang
Quantum geometry has been extensively linked to charge, spin, orbital, and thermal transport in crystalline solids, but its imprint on entropy transport remains largely unexplored.…
Quantum geometric map of magnetotransport
Longjun Xiang, Jinxiong Jia, Fuming Xu +1
We propose a quantum geometric map for the magnetononlinear Hall effect (MNHE), the planar Hall effect (PHE), and the ordinary Hall effect (OHE). These magnetotransport phenomena o…
Nonlinear Magnetoelectric Edelstein Effect
Jinxiong Jia, Longjun Xiang, Zhenhua Qiao +1
The linear Edelstein effect is a cornerstone phenomenon in spintronics that describes the generation of spin magnetization in response to an applied electric field. Recent theoreti…
Unconventional Hall Effect in Gapless Superconductors: Transverse Supercurrent Converted from Normal Current
Miaomiao Wei, Longjun Xiang, Fuming Xu +2
A normal metallic system proximitized by a superconductor can exhibit a gapless superconducting state characterized by segmented Fermi surfaces, as confirmed experimentally. In suc…
Light-induced thermal noise \textit{anomaly} governed by quantum metric
Longjun Xiang, Lei Zhang, Jun Chen +3
Traditionally, thermal noise in electric currents, arising from thermal agitation, is expected to increase with temperature and disappear as approaches zero. Contrary to th…
Pseudo-Riemannian metric: a new perspective on the quantum realm
Miaomiao Wei, Longjun Xiang, Fuming Xu +2
As a fundamental concept in condensed matter physics, quantum geometry within the Riemannian metric elucidates various exotic phenomena, including the Hall effects driven by Berry…
Quantum intrinsic -odd spin Hall effect in altermagnets
Miaomiao Wei, Longjun Xiang, Fuming Xu +2
Drude weight, historically associated with the longitudinal Drude conductivity, can be generalized to describe the transverse or Hall component of the extrinsic conductivity tensor…
Spin transport revealed by the spin quantum geometry
Longjun Xiang, Hao Jin, Jian Wang
We present the framework of \textit{spin quantum geometry}, which is fundamentally linked to the spin degree of freedom of Bloch electrons and incorporates both the spin quantum ge…
Equivalence of semiclassical and response theories for second-order nonlinear ac Hall effects
Jinxiong Jia, Longjun Xiang, Zhenhua Qiao +1
It has been known that the semiclassical theory and the response theory can equivalently give the Drude and the intrinsic anomalous Hall conductivities in the linear order of elect…
Intrinsic gyrotropic magnetic current from Zeeman quantum geometry
Longjun Xiang, Jinxiong Jia, Fuming Xu +2
Quantum geometric tensor (QGT), which is usually obtained by evaluating the quantum distance between Bloch states parametrized by momentum, plays a key role in exploring the exotic…
Classification of spin Hall effect in two-dimensional systems
Longjun Xiang, Fuming Xu, Luyang Wang +1
Physical properties such as the conductivity are usually classified according to the symmetry of the underlying system using Neumann's principle, which gives an upper bound for the…
Gapless superconducting state and mirage gap in altermagnets
Miaomiao Wei, Longjun Xiang, Fuming Xu +3
The interplay between spin-orbit interaction (SOI) and magnetism produces interesting phenomena in superconductors. When a two-dimensional (2D) system with strong SOI is coupled to…
Linear displacement current solely driven by the quantum metric
Longjun Xiang, Bin Wang, Yadong Wei +2
Quantum metric and Berry curvature are the real part and imaginary part of the quantum geometric tensor, respectively. The T-odd (T: time-reversal) nonlinear Hall effect driven by…
Quantifying the photocurrent fluctuation in quantum materials by shot noise
Longjun Xiang, Hao Jin, Jian Wang
The DC photocurrent can detect the topology and geometry of quantum materials without inversion symmetry. Herein, we propose that the DC shot noise (DSN), as the fluctuation of pho…
Quantum Fluctuation of the Quantum Geometric Tensor and its Manifestation as Intrinsic Hall Signatures in Time-Reversal Invariant Systems
Miaomiao Wei, Luyang Wang, Bin Wang +4
In time-reversal invariant systems, all charge Hall effects predicted so far are extrinsic effects due to the dependence on the relaxation time. We explore intrinsic Hall signature…
Third-order intrinsic anomalous Hall effect with generalized semiclassical theory
Longjun Xiang, Chao Zhang, Luyang Wang +1
The linear intrinsic anomalous Hall effect (IAHE) and second-order IAHE have been intensively investigated in time-reversal broken systems. However, as one of the important members…
Intrinsic in-plane magnetononlinear Hall effect in tilted Weyl semimetals
Longjun Xiang, Jian Wang
Armed with the extended semiclassical theory, we propose a Hall effect at order, particularly in Weyl semimetals (WSMs). We dub this effect the in-plane magnetononlinear Hall…
Quantum third-order nonlinear Hall effect of a four-terminal device with time-reversal symmetry
Miaomiao Wei, Longjun Xiang, Luyang Wang +2
The third-order nonlinear Hall effect induced by Berry-connection polarizability tensor has been observed in Weyl semimetals T-MoTe as well as T-TaIrTe. The experim…
Tunable Giant Rashba-type Spin Splitting in PtSe/MoSe Heterostructure
Longjun Xiang, Youqi Ke, Qingyun Zhang
We report a giant Rashba-type spin splitting in two-dimensional heterostructure PtSe/MoSe with first-principles calculations. We obtain a large value of spin splitting ener…