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

Research output: Contribution to journalJournal article

Published

Journal publication date15/07/2004
JournalPhysical Review Letters
Journal number3
Volume93
Pages036804
Original languageEnglish

Abstract

We study the geometrical commensurability oscillations imposed on the resistivity of 2D electrons in a perpendicular magnetic field by a propagating surface acoustic wave (SAW). We show that, for ω<ωc, this effect contains an anisotropic dynamical classical contribution increasing the resistivity and a nonequilibrium quantum contribution isotropically decreasing the resistivity, and we predict zero-resistance states associated with geometrical commensurability at large SAW amplitude.