3 papers
cond-mat.mes-hall2026
Quantum Metric Length as a Fundamental Length Scale in Disordered Flat Band Materials
Chun Wang Chau, Tian Xiang, Shuai A. Chen +1
Our previous understanding of electronic transport in disordered systems was based on the assumption that there is a finite Fermi velocity for the relevant electrons. The Fermi vel…
cond-mat.str-el2025
Generalized Peierls substitution for Wannier obstructions: response to disorder and interactions
Shuai A. Chen, Roderich Moessner, Tai Kai Ng
We study the interplay between quantum geometry, interactions, and external fields in complex band systems. When Wannier obstructions preclude a description based solely on atomic-…
cond-mat.mes-hall2024
Disorder-induced diffusion transport in flat-band systems with quantum metric
Chun Wang Chau, Tian Xiang, Shuai A. Chen +1
Our previous understanding of transport in disordered system depends on the assumption that there is a well-defined Fermi velocity. The Fermi velocity determines important length s…