A New Form of Interaction-Induced Dirac Cones Discoveredin Silicene/Ag(111) System

摘要

Silicene,analogous to graphene,is a one-atomthick two-dimensional crystal of silicon which is expected to share many of the remarkable properties of graphene.The buckled honeycomb structure of silicene,along with its enhanced spin-orbit coupling,endows silicene with considerable advantages over graphene in that the spin-split states in silicene are tunable with external fields.Although the