Ultrafast Energy- and Momentum-resolved Surface Dirac Photocurrents in the Topological Insulator Sb${}_2$Te${}_3$

Kenta Kuroda, J. Reimann, K. A. Kokh +4

We present energy-momentum mapping of surface Dirac photocurrent in the topological insulator Sb${}_2$Te${}_3$ by means of time- and angle-resolved two-photon photoemission spectroscop…