Evolution of the linear-polarization-angle-dependence of the radiation-induced magnetoresistance-oscillations with microwave power

We examine the role of the microwave power in the linear polarization angle dependence of the microwave radiation induced magnetoresistance oscillations observed in the high mobility GaAs/AlGaAs two dimensional electron system. The diagonal resistance Rxx was measured at the fixed magnetic fields of...

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Bibliographic Details
Published in:Applied physics letters 2014-11, Vol.105 (19)
Main Authors: Ye, Tianyu, Wegscheider, W., Mani, R. G.
Format: Article
Language:English
Subjects:
ALUMINIUM ARSENIDES
Applied physics
CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS
Dependence
ELECTRON MOBILITY
ELECTRONS
Evolution
GALLIUM ARSENIDES
Linear polarization
MAGNETIC FIELDS
MAGNETORESISTANCE
Magnetoresistivity
MICROWAVE RADIATION
Microwaves
NONLINEAR PROBLEMS
OSCILLATIONS
POLARIZATION
Radiation effects
TWO-DIMENSIONAL CALCULATIONS
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Summary:We examine the role of the microwave power in the linear polarization angle dependence of the microwave radiation induced magnetoresistance oscillations observed in the high mobility GaAs/AlGaAs two dimensional electron system. The diagonal resistance Rxx was measured at the fixed magnetic fields of the photo-excited oscillatory extrema of Rxx as a function of both the microwave power, P, and the linear polarization angle, θ. Color contour plots of such measurements demonstrate the evolution of the lineshape of Rxx versus θ with increasing microwave power. We report that the non-linear power dependence of the amplitude of the radiation-induced magnetoresistance oscillations distorts the cosine-square relation between Rxx and θ at high power.
ISSN:0003-6951
1077-3118
DOI:10.1063/1.4901509