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Phys. Rev. Lett. 91, 126805 (2003) [4 pages]

Coulomb Drag by Small Momentum Transfer between Quantum Wires

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M. Pustilnik1,2, E. G. Mishchenko3,4, L. I. Glazman1, and A. V. Andreev3,4
1Theoretical Physics Institute, University of Minnesota, Minneapolis, Minnesota 55455, USA
2School of Physics, Georgia Institute of Technology, Atlanta, Georgia 30332, USA
3Bell Laboratories, Lucent Technologies, Murray Hill, New Jersey 07974, USA
4Department of Physics, University of Colorado, Boulder, Colorado 80390, USA

Received 13 August 2002; published 19 September 2003

We demonstrate that in a wide range of temperatures Coulomb drag between two weakly coupled quantum wires is dominated by processes with a small interwire momentum transfer. Such processes, not accounted for in the conventional Luttinger liquid theory, cause drag only because the electron dispersion relation is not linear. The corresponding contribution to the drag resistance scales with temperature as T2 if the wires are identical, and as T5 if the wires are different.

© 2003 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevLett.91.126805
DOI:
10.1103/PhysRevLett.91.126805
PACS:
73.63.Nm, 71.10.Pm, 72.15.Nj, 73.23.Ad
 
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