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Title: 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 R{sub xx} was measured at the fixed magnetic fields of the photo-excited oscillatory extrema of R{sub xx} 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 R{sub xx} 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 R{sub xx} and θ at high power.
Authors:
;  [1] ;  [2]
  1. Department of Physics and Astronomy, Georgia State University, Atlanta, Georgia 30303 (United States)
  2. Laboratorium für Festkörperphysik, ETH Zürich, 8093 Zürich (Switzerland)
Publication Date:
OSTI Identifier:
22391940
Resource Type:
Journal Article
Resource Relation:
Journal Name: Applied Physics Letters; Journal Volume: 105; Journal Issue: 19; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; ALUMINIUM ARSENIDES; ELECTRON MOBILITY; ELECTRONS; GALLIUM ARSENIDES; MAGNETIC FIELDS; MAGNETORESISTANCE; MICROWAVE RADIATION; NONLINEAR PROBLEMS; OSCILLATIONS; POLARIZATION; TWO-DIMENSIONAL CALCULATIONS