Nature Communications (May 2018)
Large quantum-spin-Hall gap in single-layer 1T′ WSe2
Abstract
The current known two-dimensional topological insulators with small band gaps limit the potential for room temperature applications. Here, Chen et al. observe a sizable gap of 129 meV in a 1T'-WSe2 single layer grown on bilayer graphene with in-gap edge state near the layer boundary.