Topological phase transition and two dimensional topological insulators in Ge-based thin films

Bahadur Singh, Hsin Lin, R. Prasad +1

We discuss possible topological phase transitions in Ge-based thin films of Ge(Bi${}_x$Sb${}_{1-x}$)${}_2$Te${}_4$ as a function of layer thickness and Bi concentration $x$ using the first…