Mutual friction between parallel two-dimensional electron systems

T. J. Gramila, J. P. Eisenstein, A. H. MacDonald, L. N. Pfeiffer, and K. W. West
Phys. Rev. Lett. 66, 1216 – Published 4 March 1991
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Abstract

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.

  • Received 14 November 1990

DOI:https://doi.org/10.1103/PhysRevLett.66.1216

©1991 American Physical Society

Authors & Affiliations

T. J. Gramila, J. P. Eisenstein, A. H. MacDonald, L. N. Pfeiffer, and K. W. West

  • AT&T Bell Laboratories, Murray Hill, New Jersey 07974 Department of Physics, Indiana University, Bloomington, Indiana 47405

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Issue

Vol. 66, Iss. 9 — 4 March 1991

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