TY  - JOUR
AU  - Olbrich, P.
AU  - Golub, L. E.
AU  - Herrmann, T.
AU  - Danilov, S. N.
AU  - Plank, H.
AU  - Bel’kov, V. V.
AU  - Mussler, G.
AU  - Weyrich, Ch.
AU  - Schneider, Claus Michael
AU  - Kampmeier, J.
AU  - Grützmacher, D.
AU  - Plucinski, L.
AU  - Eschbach, M.
AU  - Ganichev, S. D.
TI  - Room-Temperature High-Frequency Transport of Dirac Fermions in Epitaxially Grown $Sb_2Te_3$- and $Bi_2Te_3$-Based Topological Insulators
JO  - Physical review letters
VL  - 113
IS  - 9
SN  - 1079-7114
CY  - College Park, Md.
PB  - APS
M1  - FZJ-2014-05067
SP  - 096601
PY  - 2014
AB  - We report on the observation of photogalvanic effects in epitaxially grown Sb2Te3 and Bi2Te3 three-dimensional (3D) topological insulators (TI). We show that asymmetric scattering of Dirac fermions driven back and forth by the terahertz electric field results in a dc electric current. Because of the “symmetry filtration” the dc current is generated by the surface electrons only and provides an optoelectronic access to probe the electron transport in TI, surface domains orientation, and details of electron scattering in 3D TI even at room temperature.
LB  - PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:000341270600008
DO  - DOI:10.1103/PhysRevLett.113.096601
UR  - https://juser.fz-juelich.de/record/156276
ER  -