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arXiv · 0711.4249

Fractional microwave-induced resistance oscillations

I. A. Dmitriev·A. D. Mirlin·D. G. Polyakov
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Abstract

We develop a systematic theory of microwave-induced oscillations in magnetoresistivity of a 2D electron gas in the vicinity of fractional harmonics of the cyclotron resonance, observed in recent experiments. We show that in the limit of well-separated Landau levels the effect is dominated by the multiphoton inelastic mechanism. At moderate magnetic field, two single-photon mechanisms become important. One of them is due to resonant series of multiple single-photon transitions, while the other originates from microwave-induced sidebands in the density of states of disorder-broadened Landau levels.

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I. A. Dmitriev, A. D. Mirlin, D. G. Polyakov. 2007-11-27. Fractional microwave-induced resistance oscillations. https://doi.org/10.1016/j.physe.2007.09.003

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