Correlation effects on the coupled plasmon modes of a double quantum well
- Hill, N P R
- Nicholls, James
- Linfield, E H
- Pepper, M
- Ritchie, D A
- Jones, G A C
- Hu, B Y K
- Flensberg, K
DOI Publisher
American Physical Society (APS)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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