Gramila, T. J. and Eisenstein, J. P. and MacDonald, A. H. and Pfeiffer, L. N. and West, K. W. (1991) Mutual friction between parallel two-dimensional electron systems. Physical Review Letters, 66 (9). pp. 1216-1219. ISSN 0031-9007. http://resolver.caltech.edu/CaltechAUTHORS:GRAprl91
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Frictional drag between isolated two-dimensional electron gases separated by a thin barrier has been observed at low temperatures in GaAs/AlGaAs double-quantum-well structures. Separate electrical connection to the two electron systems allows the injection of current into one and the detection of a small drag voltage across the other. The drag voltage is a direct measure of the interwell momentum relaxation rate. Measurements of this rate are in qualitative agreement with calculations of an interwell Coulomb scattering model.
|Additional Information:||©1991 The American Physical Society Received 14 November 1990 We thank H. L. Stormer, B. Altshuler, and E. Abrahams for useful discussions. A.H.M. was supported in part by NSF Grant No. DMR-8802383.|
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|Deposited On:||10 Nov 2006|
|Last Modified:||26 Dec 2012 09:16|
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