Abstract
We show theoretically that the Coulomb drag rate between two parallel quasi-two-dimensional electron gases with equal Fermi velocities is substantially enhanced by the coupled acoustic and optic plasmon modes at temperatures (where is the Fermi temperature) for experimentally relevant parameters. The acoustic mode causes a sharp upturn in the scaled drag rate with increasing temperature at . Other experimental signatures of the plasmon-dominated drag rate are a dependence on the well separation and a peak as a function of relative densities at matched Fermi velocities.
- Received 10 June 1994
DOI:https://doi.org/10.1103/PhysRevLett.73.3572
©1994 American Physical Society