Abstract

AbstractWe report on theoretical studies of a recently discovered strong radiation‐induced magnetoresistance spike obtained in ultraclean two‐dimensional electron systems at low temperatures. The most striking feature of this strong spike is that it shows up on the second harmonic of the cyclotron resonance. We apply the radiation‐driven electron orbits model in the ultraclean scenario. We calculate the new average advanced distance by the electron in a scattering event which will define the unexpected resonance spike position. Calculated results are in good agreement with experiments. (© 2012 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)

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