66 citations · 66 across the 1 of their papers we have counts for
7 papers
Terahertz radiation driven chiral edge currents in graphene
J. Karch, C. Drexler, P. Olbrich +14
We observe photocurrents induced in single layer graphene samples by illumination of the graphene edges with circularly polarized terahertz radiation at normal incidence. The photo…
Low-temperature photocarrier dynamics in monolayer MoS2
T. Korn, S. Heydrich, M. Hirmer +2
The band structure of MoS strongly depends on the number of layers, and a transition from indirect to direct-gap semiconductor has been observed recently for a single layer of…
Decoherence-assisted initialization of a resident hole spin polarization in a two-dimensional hole gas
M. Kugler, K. Korzekwa, P. Machnikowski +9
We investigate spin dynamics of resident holes in a p-modulation-doped GaAs/AlGaAs single quantum well. Time-resolved Faraday and Kerr rotation, as well as resonant…
Optical polarization of localized hole spins in p-doped quantum wells
M. Studer, M. Hirmer, D. Schuh +3
The initialization of spin polarization in localized hole states is investigated using time-resolved Kerr rotation. We find that the sign of the polarization depends on the magneti…
Spin and orbital mechanisms of the magneto-gyrotropic photogalvanic effects in GaAs/AlGaAs quantum well structures
V. Lechner, L. E. Golub, F. Lomakina +12
We report on the study of the linear and circular magneto-gyrotropic photogalvanic effect (MPGE) in GaAs/AlGaAs quantum well structures. Using the fact that in such structures the…
Scanning Raman spectroscopy of graphene antidot lattices: Evidence for systematic p-type doping
S. Heydrich, M. Hirmer, C. Preis +4
We have investigated antidot lattices, which were prepared on exfoliated graphene single layers via electron-beam lithography and ion etching, by means of scanning Raman spectrosco…