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

A. T. Hatke; M. A. Zudov; L. N. Pfeiffer; K. W. West

doi:10.1103/PhysRevB.84.121301

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

A. T. Hatke, M. A. Zudov, L. N. Pfeiffer, K. W. West

Research output: Contribution to journal › Article › peer-review

27 Scopus citations

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.

Original language	English (US)
Article number	121301
Journal	Physical Review B - Condensed Matter and Materials Physics
Volume	84
Issue number	12
DOIs	https://doi.org/10.1103/PhysRevB.84.121301
State	Published - Sep 2 2011
Externally published	Yes

All Science Journal Classification (ASJC) codes

Electronic, Optical and Magnetic Materials
Condensed Matter Physics

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10.1103/PhysRevB.84.121301

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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.",

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AU - Hatke, A. T.

AU - Zudov, M. A.

AU - Pfeiffer, L. N.

AU - West, K. W.

PY - 2011/9/2

Y1 - 2011/9/2

N2 - 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.

AB - 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.

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

Abstract

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