5 papers
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…
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…
Layer Hall effect induced by altermagnetism
Fang Qin, Rui Chen
In this work, we propose a scheme to realize the layer Hall effect in the ferromagnetic topological insulator BiSe via proximity to -wave altermagnets. We show that an a…
Emergent Weyl-like points in periodically modulated systems
Fang Qin, Rui Chen
We investigate a three-dimensional (3D) topological phase resembling a Weyl semimetal, modulated by a periodic potential and engineered through Floquet dynamics. This system is con…
Tunable corner states in topological insulators with long-range hoppings and diverse shapes
Fang Qin, Rui Chen
In this work we develop a theoretical framework for the control of corner modes in higher-order topological insulators (HOTIs) featuring long-range hoppings and diverse geometries,…