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Correlation Effects on the Coupled Plasmon Modes of a Double Quantum Well

N P R Hill·J. T. Nicholls·E. H. Linfield·M. Pepper·D. A. Ritchie·G. A. C. Jones·Ben Yu-Kuang Hu·Karsten Flensberg
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Abstract

At temperatures comparable to the Fermi temperature, we have measured a plasmon enhanced Coulomb drag in a GaAs/AlGaAs double quantum well electron system. This measurement provides a probe of the many-body corrections to the coupled plasmon modes, and we present a detailed comparison between experiment and theory testing the validity of local field theories. Using a perpendicular magnetic field to raise the magnetoplasmon energy we can induce a crossover to single-particle Coulomb scattering.

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N P R Hill, J. T. Nicholls, E. H. Linfield, M. Pepper, D. A. Ritchie, G. A. C. Jones, Ben Yu-Kuang Hu, Karsten Flensberg. 1997-03-06. Correlation Effects on the Coupled Plasmon Modes of a Double Quantum Well. https://doi.org/10.1103/physrevlett.78.2204

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