Phase of phonon-induced resistance oscillations in a high-mobility two-dimensional electron gas

2011/09/02 by A. T. Hatke, M. A. Zudov, L. N. Pfeiffer +1 · 1 citation
Physics and Astronomy · #Physics of Superconductivity and Magnetism #Quantum and electron transport phenomena #Semiconductor Quantum Structures and Devices #cond-mat.mes-hall

paper · pdf · doi:10.1103/physrevb.84.121301

published as Physical Review B - Rapid Communications 84, 121301(R) (2011)

openalex publication_date 2011/09/02 · arxiv created 2011/12/20 · arxiv updated 2011/12/21 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28

Abstract

We report on experimental studies of magnetoresistance oscillations that originate from the resonant interaction of two-dimensional electrons with thermal transverse-acoustic phonons in very high-mobility GaAs/AlGaAs quantum wells. We find that the oscillation maxima consistently occur when a frequency of a phonon with twice the Fermi momentum exceeds an integer multiple of the cyclotron frequency. This observation is in contrast to to all previous experiments associating resistance maxima with magnetophonon resonance and its harmonics. Our experimentally obtained resonant condition is in excellent quantitative agreement with recent theoretical proposals.

Citations

• Leaky interface phonons inAlxGa1−xAs/GaAsstructures
• Theory of microwave-induced oscillations in the magnetoconductivity of a two-dimensional electron gas
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• Steady States of a Microwave-Irradiated Quantum-Hall Gas

Cited by

• Microwave photoresistance in a two-dimensional electron gas with separated Landau levels