93 citations · 255 across the 17 of their papers we have counts for
7 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…
Enhanced Anomalous Nernst Effect in the Ferromagnetic Kondo Lattice CeCo2As2
Shuyue Guan, Weian Guo, Pengyu Zheng +9
The anomalous Nernst effect (ANE), generating a voltage perpendicular to a temperature gradient due to magnetization, is closely linked to the Berry curvature (BC) near the Fermi e…
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…