2 papers
cond-mat.mes-hall2023
Diagrammatic approach to excitonic effects on nonlinear optical response
Yu-Tzu Chang, Yang-Hao Chan
Optical responses of atomically thin 2D materials are greatly influenced by electron-hole interactions. It is by far established that exciton signatures can be well-identified in t…
cond-mat.str-el2023
A gate-tunable quantum phase transition in a topological excitonic insulator
Yande Que, Yang-Hao Chan, Junxiang Jia +9
Coulomb interactions among electrons and holes in two-dimensional (2D) semimetals with overlapping valence and conduction bands can give rise to a correlated insulating ground stat…