Radiation-induced magnetoresistance oscillation in a two-dimensional electron gas in Faraday geometry

Details Radiation-induced magnetoresistance oscillation in a two-dimensional electron gas in Faraday geometry Radiation-induced magnetoresistance oscillation in a two-dimensional electron gas in Faraday geometry

2003-04-30

arxiv.org/abs/cond-mat/0304687v2

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

4 pages, 1 figure, revised version to be published in Phys. Rev. Lett

Scientific paper

10.1103/PhysRevLett.91.226805

Microwave-radiation induced giant magnetoresistance oscillations recently discovered in high-mobility two-dimensional electron systems in a magnetic field, are analyzed theoretically. Multiphoton-assisted impurity scatterings are shown to be the primary origin of the oscillation. Based on a model which considers the interaction of electrons with the electromagnetic fields in Faraday geometry, we are able not only to reproduce the correct period, phase and the negative resistivity of the main oscillation, but also to obtain secondary peaks and additional maxima and minima in the resistivity curve, some of which were already observed in the experiments.

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