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Nanoscale Res Lett. 2013 May 16;8(1):241. doi: 10.1186/1556-276X-8-241.

Off-resonance magnetoresistance spike in irradiated ultraclean 2D electron systems.

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Escuela Politécnica Superior, Universidad Carlos III, Leganes, Madrid, 28911, Spain.


: We report on the 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 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. Accordingly, 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.

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