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Evidence for 2k_F Electron-Electron Scattering Processes in Coulomb Drag

M. Kellogg·J. P. Eisenstein·L. N. Pfeiffer·K. W. West
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Abstract

Measurements and calculations of Coulomb drag between two low density, closely spaced, two-dimensional electron systems are reported. The experimentally measured drag exceeds that calculated in the random phase approximation by a significant, and density dependent, factor. Studies of the dependence of the measured drag on the difference in density between the two layers clearly demonstrate that previously ignored q=2k_F scattering processes can be very important to the drag at low densities and small layer separations.

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M. Kellogg, J. P. Eisenstein, L. N. Pfeiffer, K. W. West. 2002-06-27. Evidence for 2k_F Electron-Electron Scattering Processes in Coulomb Drag. https://doi.org/10.1016/s0038-1098(02)00426-x

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