Observation of the Topologically Originated Edge States in large-gap Quasi-One-Dimensional a-Bi${}_4$Br${}_4$

Pengcheng Mao, Maoyuan Wang, Dashuai Ma +16

Two-dimensional topological insulator features time-reversal-invariant spin-momentum-locked one-dimensional (1D) edge states with a linear energy dispersion. However, experimental…