Physics – Condensed Matter – Mesoscale and Nanoscale Physics
Scientific paper
2006-09-05
Physics
Condensed Matter
Mesoscale and Nanoscale Physics
2 pages, 2 figures
Scientific paper
The frequency dependence of the peak-valley pairs occurring in the magnetoresistivity of a two-dimensional electron system under enhanced microwave irradiation, which are considered to associate with multiphoton processes, is examined in the sub-cyclotron-frequency range, based on a theoretical treatment with photon-assisted electron transitions due to impurity scattering. It is shown that with equivalent radiation power (producing the same height of the main oscillation peak), much more and stronger multi-photon structures show up at lower frequency, and when frequency increases all these structures rapidly weaken, diminish and finally disappear completely. These are in agreement with the recent experimental observation [cond-mat/0608633].
Lei Xing-Lin
Liu Shen-Ye
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