Forskning ved Københavns Universitet - Københavns Universitet


Correlation effects on the coupled plasmon modes of a double quantum well

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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
  • Flensberg, Karsten

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.

TidsskriftPhysical Review Letters
Udgave nummer11
Sider (fra-til)2204-2207
Antal sider4
StatusUdgivet - 1 jan. 1997

ID: 199597163