2 papers
cond-mat.mes-hall2026
Optical Hall absorption sum rule and spectral compensation in time-reversal-breaking moiré and Hofstadter systems
Yixin Zhang, H. Huang
Optical spectroscopy provides a powerful, contact-free probe of topological quantum states, yet exact constraints on antisymmetric Hall absorption remain much less well developed t…
cond-mat.mtrl-sci2025
Unified Multipole Bott Indices for Non-Hermitian Skin Effect in Different Orders
Wuping Yang, H. Huang
Non-Hermitian systems exhibit a distinctive phenomenon known as the non-Hermitian skin effect, where an extensive number of eigenstates become localized at the boundaries of a latt…