Atomically thin obstructed atomic insulators with robust edge modes and quantized spin Hall effect
Atomically thin obstructed atomic insulators with robust edge modes and quantized spin Hall effect
Symmetry-protected edge states serve as direct evidence of nontrivial electronic topology in atomically thin materials. Finding these states in experimentally realizable single-phase materials presents a substantial challenge for their use in fundamental studies and developing functional nanoscale devices. Here, we show the presence of robust edge states in phosphorene and …