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arXiv · 1209.5808

Effect of rotation of the polarization of linearly polarized microwaves on the radiation-induced magnetoresistance oscillations

A. N. Ramanayaka·R. G. Mani·J. Iñarrea·W. Wegscheider
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Abstract

Light-matter coupling is investigated by rotating, by an angle \theta, the polarization of linearly polarized microwaves with respect to the long-axis of GaAs/AlGaAs Hall-bar electron devices. At low microwave power, P, experiments show a strong sinusoidal variation in the diagonal resistance R_{xx} vs. \theta at the oscillatory extrema, indicating a linear polarization sensitivity in the microwave radiation-induced magnetoresistance oscillations. Surprisingly, the phase shift \theta_{0} for maximal oscillatory R_{xx} response under photoexcitation appears dependent upon the radiation-frequency f, the extremum in question, and the magnetic field orientation or sgn(B).

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A. N. Ramanayaka, R. G. Mani, J. Iñarrea, W. Wegscheider. 2012-09-26. Effect of rotation of the polarization of linearly polarized microwaves on the radiation-induced magnetoresistance oscillations. https://doi.org/10.1103/physrevb.85.205315

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