Ultrafast light-induced Coherent Optical and Acoustic Phonons in few Quintuple Layers of Topological Insulators Bi2Te3

W. Weiss, K. Balin, R. Rapacz +4

Ultrafast lattice dynamics of few quintuple layers of topological insulator (TI) Bi${}_2$Te${}_3$ is studied with time-resolved optical pump-probe spectroscopy. Both optical and acoust…