Surface vibrational modes of the topological insulator Bi${}_2$Se${}_3$ observed by Raman spectroscopy

H. -H. Kung, M. Salehi, I. Boulares +10

We present polarization resolved Raman scattering study of surface vibration modes in the topological insulator Bi${}_2$Se${}_3$ single crystal and thick films. Besides the four Raman…