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Surface acoustic wave induced magnetoresistance oscillations in a 2D electron gas

John P. Robinson·Malcolm P. Kennett·Nigel R. Cooper·Vladimir I. Fal'ko
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Abstract

We study the geometrical commensurability oscillations imposed onto the resistivity of 2D electrons in a perpendicular magnetic field by a propagating surface acoustic wave (SAW). We show that, for $ω<ω_{c}$, this effect is composed of an anisotropic dynamical classical contribution increasing the resistivity and the non-equilibrium quantum contribution isotropically decreasing resistivity, and we predict the appearance of zero-resistance states associated with geometrical commensurability at large SAW amplitude. We also describe how the commensurability oscillations modulate the resonances in the SAW-induced resistivity at multiples of the cyclotron frequency.

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John P. Robinson, Malcolm P. Kennett, Nigel R. Cooper, Vladimir I. Fal'ko. 2003-12-25. Surface acoustic wave induced magnetoresistance oscillations in a 2D electron gas. https://doi.org/10.1103/physrevlett.93.036804

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