Abstract
Abstract We report on theoretical studies of the influence of an in-plane magnetic field on the recently discovered strong radiation-induced magnetoresistance spike obtained in ultraclean two-dimensional electron systems. The most striking feature of this spike is that it shows up on the second harmonic of the cyclotron resonance. According to experiments, the effect of an in-plane magnetic field is to reduced dramatically the intensity of both, radiation-induced resistant spike and oscillations. We apply the radiation-driven electron orbits model in the ultraclean scenario. We are able to explain with the same physical mechanism the whole experimental response (spike and resistance oscillations). Accordingly, the increasing disorder in the sample caused by the in-planed magnetic field would be responsible of the quenching. Calculated results are in good agreement with experiments.
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