3 papers
cond-mat.mes-hall2026
Switchable Surface Linear Photogalvanic Effect in the Magnetic Weyl Semimetal Co3Sn2S2
Niket Shah, Aymen Nomani, Kai Chen +2
We investigate the linear photogalvanic effect (LPGE) on the surface of the magnetic Weyl semimetal Co3Sn2S2 using a Green's-function and diagrammatic formalism. While the LPGE van…
cond-mat.mes-hall2025
Non-Hermitian quantum geometric tensor and nonlinear electrical response
Kai Chen, Jie Zhu
We demonstrate that the non-Hermitian quantum geometric tensor (QGT) governs nonlinear electrical responses in systems with a spectral line gap. The quantum metric, which is the sy…
cond-mat.supr-con2025
The Effect of the Non-Abelian Quantum Metric on Superfluidity
Kai Chen, Bishnu Karki, Pavan Hosur
The quantum geometric tensor, which encodes the full geometric information of quantum states in projective Hilbert space, plays a crucial role in condensed matter physics. In this…