Anisotropy in the dielectric function of Bi${}_2$Te${}_3$ from first principles: From the UV-visible to the infrared range

R. Busselez, A. Levchuk, P. Ruello +2

The dielectric properties of Bi${}_2$Te${}_3$, a layered compound crystallizing in a rhombohedral structure, are investigated by means of first-principles calculations at the random ph…