Optical characterization of Bi${}_2$Se${}_3$ in a magnetic field: infrared evidence for magnetoelectric coupling in a topological insulator material

A. D. LaForge, A. Frenzel, B. C. Pursley +4

We present an infrared magneto-optical study of the highly thermoelectric narrow-gap semiconductor Bi${}_2$Se${}_3$. Far-infrared and mid-infrared (IR) reflectance and transmission mea…