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

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

1997-03-06

arxiv.org/abs/cond-mat/9703066v1

Phys. Rev. Lett. 78, 2204 (1997).

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

plain tex, 4 pages, 3 figures, to be published in PRL

Scientific paper

10.1103/PhysRevLett.78.2204

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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