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Evidence for 2k_F electron–electron scattering processes in Coulomb drag

Kellogg, M. and Eisenstein, J. P. and Pfeiffer, L. N. and West, K. W. (2002) Evidence for 2k_F electron–electron scattering processes in Coulomb drag. Solid State Communications, 123 (12). pp. 515-519. ISSN 0038-1098. doi:10.1016/s0038-1098(02)00426-x.

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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.

Item Type:Article
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Additional Information:© 2002 Elsevier Science Ltd. Received 6 August 2002, Accepted 12 August 2002, Available online 1 October 2002. We thank A. Stern and S. Das Sarma for useful discussions. This work was supported by the NSF under Grant No. DMR0070890 and the DOE under Grant No. DE-FG03-99ER45766.
Funding AgencyGrant Number
Department of Energy (DOE)DE-FG03-99ER45766
Subject Keywords:Two-dimensional electron systems; Coulomb drag; Electron–electron scattering
Issue or Number:12
Classification Code:PACS: 73.40.−c; 73.20.−r; 73.63.Hs
Record Number:CaltechAUTHORS:20190521-081802621
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Official Citation:M Kellogg, J.P Eisenstein, L.N Pfeiffer, K.W West, Evidence for 2kF electron–electron scattering processes in Coulomb drag, Solid State Communications, Volume 123, Issue 12, 2002, Pages 515-519, ISSN 0038-1098, (
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:95623
Deposited By: Tony Diaz
Deposited On:21 May 2019 17:54
Last Modified:16 Nov 2021 17:14

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