Influence of a Parallel Magnetic Field on Microwave Photoconductivity in a High-Mobility 2D Electron System

2005/04/27 by C. L. Yang, R. R. Du, Yang, C. L. +5
Physics and Astronomy · #FOS: Physical sciences #Mesoscale and Nanoscale Physics (cond-mat.mes-hall) #cond-mat.mes-hall

paper · pdf · doi:10.48550/arxiv.cond-mat/0504715

RevTex4, 4 pages, 3 figures

arxiv created 2005/04/27 · arxiv updated 2009/12/01

Abstract

We have studied experimentally the influence of a parallel magnetic field (B_//) on microwave-induced resistance oscillations (MIRO) and zero-resistance states (ZRS) previously discovered in a high-mobility 2D electron system. We have observed a strong suppression of MIRO/ZRS by a modest B_//∼ 0.5 T. In Hall bar samples, magnetoplasmon resonance (MPR) has also been observed concurrently with the MIRO/ZRS. In contrast to the suppression of MIRO/ZRS, the MPR peak is found to be enhanced by B_//. These findings have not been addressed by current models proposed to explain the microwave-induced effects.

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