Physics – Condensed Matter – Mesoscale and Nanoscale Physics
Scientific paper
2006-02-03
Phys. Rev. B v. 76, p. 165321 (2007)
Physics
Condensed Matter
Mesoscale and Nanoscale Physics
final version: total 13 pages including 6 figures (6 pages in journal format)
Scientific paper
10.1103/PhysRevB.76.165321
The frequency dependence of microwave-induced resistance oscillations (MIROs) has been studied experimentally in high-mobility electron GaAs/AlGaAs structures to explore the limits at which these oscillations can be observed. It is found that in dc transport experiments at frequencies above 120 GHz, MIROs start to quench, while above 230 GHz, they completely disappear. The results will need to be understood theoretically but are qualitatively discussed within a model in which forced electronic charge oscillations (plasmons) play an intermediate role in the interaction process between the radiation and the single-particle electron excitations between Landau levels.
Byszewski M.
Fedorych O. M.
Gupta J. A.
Hilke Michael
Maude Duncan K.
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