Interband absorption edge in topological insulators Bi${}_2$(Te${}_{1-x}$Se${}_x$)${}_3$

A. Dubroka, O. Caha, M. Hronček +7

We have investigated the optical properties of thin films of topological insulators Bi${}_2$Te${}_3$, Bi${}_2$Se${}_3$ and their alloys Bi${}_2$(Te${}_{1-x}$Se${}_x$)${}_3$ on BaF${}_2$ su…