Evolution of the frequency-dependent polarization-angle phase-shift in the microwave radiation-induced magnetoresistance oscillations
Samaraweera, Rasanga L.
Mani, Ramesh G.
- Conference Paper
Rights / licenseCreative Commons Attribution 3.0 Unported
We report the evolution of the phase shift, θ 0, extracted from traces of the diagonal resistance, Rxx , vs. the linear polarization angle, θ, at oscillatory extrema of the microwave radiation induced magnetoresistance oscillations over the 36 ≤ f ≤ 40 GHz band in GaAs/AlGaAs system. A reference phase shift for the linear polarization angle in the vicinity of the specimen is obtained with the help of a sensitive carbon resistor. We fit an empirical cosine square law to the sinusoidal responses of Rxx vs. θ to extract the phase shift θ 0. The quasi-continuous variation θ 0 vs. f trace suggests a preferable polarization orientation for the specimen, and the f− and B− independence of overall average of θ 0 Show more
Journal / seriesJournal of Physics. Conference Series
PublisherInstitute of Physics
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