93 citations · 255 across the 17 of their papers we have counts for
13 papers · 1 filter
Optical conductivity signature of Van Hove singularity in altermagnetic topological systems
Fang Qin, Rui Chen, Xiao-Bin Qiang
We investigate the topological phases, joint density of states (JDOS), optical conductivities, and magneto-optical responses of a two-dimensional -wave altermagnet with spin-orb…
Probing quantum geometric nonlinear magnetization via second-harmonic magneto-optical Kerr effect
Xuan Qian, Xiao-Bin Qiang, Wenkai Zhu +5
Quantum geometry provides an intrinsic framework for characterizing the geometric structure of quantum states. It highlights its relevance to various aspects of fundamental physics…
Quantum Christoffel Nonlinear Magnetization
Xiao-Bin Qiang, Xiaoxiong Liu, Hai-Zhou Lu +1
The Christoffel symbol is an essential quantity in Einstein's general theory of relativity. We discover that an electric field can induce a nonlinear magnetization in quantum mater…
Anomalous thermoelectric and thermal Hall effects in irradiated altermagnets
Fang Qin, Xiao-Bin Qiang
We show that a -wave altermagnet can be transformed into a Chern insulator by irradiating it with elliptically polarized light from a high-frequency photon beam. We further expl…
Quantum Geometric Origin of Orbital Magnetization
Xiao-Bin Qiang, Tianyu Liu, Hai-Zhou Lu +1
The exploration of the Riemannian structure of the Hilbert space has led to the concept of quantum geometry, comprising geometric quantities exemplified by Berry curvature and quan…
Linear magnetoresistance of two-dimensional massless Dirac fermions in the quantum limit
Xiao-Bin Qiang, Han-Yi Xu, Ren-Jie Tong +4
Linear magnetoresistance is a hallmark of 3D Weyl metals in the quantum limit. Recently, a pronounced linear magnetoresistance has also been observed in 2D graphene [Xin et al., Na…
A Clarification on Quantum-Metric-Induced Nonlinear Transport
Xiao-Bin Qiang, Tianyu Liu, Zi-Xuan Gao +2
Over the years, Berry curvature, which is associated with the imaginary part of the quantum geometric tensor, has profoundly impacted many branches of physics. Recently, quantum me…
Quantum geometry in condensed matter
Tianyu Liu, Xiao-Bin Qiang, Hai-Zhou Lu +1
One of the most celebrated accomplishments of modern physics is the description of fundamental principles of nature in the language of geometry. As the motion of celestial bodies i…
Perpendicular in-plane negative magnetoresistance in ZrTe5
Ning Ma, Xiao-Bin Qiang, Zhijian Xie +11
The unique band structure in topological materials frequently results in unusual magneto-transport phenomena, one of which is in-plane longitudinal negative magnetoresistance (NMR)…
Reply to Comment on Phys. Rev. Lett. 127, 176601 (2021) by Lee and Yang
Peng-Lu Zhao, Xiao-Bin Qiang, Hai-Zhou Lu +1
In this Reply, we respond to the comments in Phys. Rev. Lett. 130, 219702 (2023) on our Phys. Rev. Lett. 127, 176601 (2021) ''Coulomb instabilities of a three-Dimensional higher-or…
Topological and disorder corrections to the transverse Wiedemann-Franz law and Mott relation in kagome magnets
Xiao-Bin Qiang, Z. Z. Du, Hai-Zhou Lu +1
The Wiedemann-Franz law and Mott relation are textbook paradigms on the ratios of the thermal and thermoelectric conductivities to electrical conductivity, respectively. Deviations…
Antisymmetric Seebeck effect in a tilted Weyl semimetal
Bingyan Jiang, Jiaji Zhao, Jiangyuan Qian +8
Tilting the Weyl cone breaks the Lorentz invariance and enriches the Weyl physics. Here, we report the observation of a magnetic-field-antisymmetric Seebeck effect in a tilted Weyl…
Coulomb instabilities of 3D higher-order topological insulators
Peng-Lu Zhao, Xiao-Bin Qiang, Hai-Zhou Lu +1
Topological insulator (TI) is an exciting discovery because of its robustness against disorder and interactions. Recently, higher-order TIs have been attracting increasing attentio…