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

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

2010-07-23

arxiv.org/abs/1007.4211v1

Phys. Rev. B 82, 201311(R) (2010)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

4 pages, 3 figures

Scientific paper

10.1103/PhysRevB.82.201311

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, $v_Hs$, the amplitude of oscillations saturates with lowering temperature, while the subsonic region displays exponential suppression of the phonon-assisted oscillations with temperature.

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