Phonon-induced resistance oscillations of two-dimensional electron systems drifting with supersonic velocities

Abstract

We present a theory of the phonon-assisted nonlinear dc transport of 2D electrons in high Landau levels. The nonlinear dissipative resistivity displays quantum magneto-oscillations governed by two parameters which are proportional to the Hall drift velocity $v_H$ of electrons in electric field and the speed of sound $s$. In the subsonic regime, $v_H<s$, the theory quantitatively reproduces the oscillation pattern observed in recent experiments. We also find the $\pi /2$ phase change of oscillations across the sound barrier $v_H=s$. In the supersonic regime, $v_H>s$, the amplitude of oscillations saturates with lowering temperature, while the subsonic region displays exponential suppression of the phonon-assisted oscillations with temperature.

4 pages, 3 figures

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Cited by in corpus (2)

• Giant microwave photoresistivity in a high-mobility quantum Hall system
• Non-linear response of a high mobility two-dimensional electron system near the second harmonic of the cyclotron resonance