Faraday rotation due to surface states in the topological insulator (Bi${}_{1-x}$Sb${}_x$)${}_2$Te${}_3$

Yinming Shao, Kirk W. Post, Jhih-Sheng Wu +9

Using magneto-infrared spectroscopy, we have explored the charge dynamics of (Bi,Sb)${}_2$Te${}_3$ thin films on InP substrates. From the magneto-transmission data we extracted three d…