217 citations · 407 across the 5 of their papers we have counts for
5 papers
Terahertz ratchet effects in graphene with a lateral superlattice
P. Olbrich, J. Kamann, M. König +13
Experimental and theoretical studies on ratchet effects in graphene with a lateral superlattice excited by alternating electric fields of terahertz frequency range are presented. A…
Magnetic quantum ratchet effect in Si-MOSFETs
S. D. Ganichev, S. A. Tarasenko, J. Karch +2
We report on the observation of magnetic quantum ratchet effect in metal-oxide-semiconductor field-effect-transistors on silicon surface (Si-MOSFETs). We show that the excitation o…
Ultrafast graphene-based broadband THz detector
Martin Mittendorff, Stephan Winnerl, Josef Kamann +4
We present an ultrafast graphene-based detector, working in the THz range at room temperature. A logarithmic-periodic antenna is coupled to a graphene flake that is produced by exf…
Classical ratchet effects in heterostructures with a lateral periodic potential
P. Olbrich, J. Karch, E. L. Ivchenko +5
We study terahertz radiation induced ratchet currents in low dimensional semiconductor structures with a superimposed one-dimensional lateral periodic potential. The periodic poten…
Valley-Orbit Photocurrents in (111)-oriented Si-MOSFETs
J. Karch, S. A. Tarasenko, E. L. Ivchenko +5
We demonstrate the injection of pure valley-orbit currents in multi-valley semiconductors and present the theory of this effect. We studied photo-induced transport in -doped (11…