Preparation of clean surfaces and Se vacancy formation in Bi${}_2$Se${}_3$ by ion bombardment and annealing

Weimin Zhou, Haoshan Zhu, Connie M. Valles +1

Bismuth Selenide (Bi${}_2$Se${}_3$) is a topological insulator (TI) with a structure consisting of stacked quintuple layers. Single crystal surfaces are commonly prepared by mechan…