Virtual Photon Contribution to Frictional Drag in double-layer Devices

Details Virtual Photon Contribution to Frictional Drag in double-layer Devices Virtual Photon Contribution to Frictional Drag in double-layer Devices

2002-11-26

arxiv.org/abs/cond-mat/0211600v3

PHYSICS LETTERS A 312 (2003) 123-129

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

13 pages, 1 figure

Scientific paper

10.1016/S0375-9601(03)00608-X

The first order contribution to frictional drag in bi-layered fermion gas is examined. We discuss the relevance of single photon exchange in the evaluation of transresistance, which is usually explained by second order effects such as Coulomb and phonon drag. Since the effective e.m. interaction is unscreened, in the d.c. limit we obtain a finite (and large) contribution to transconductivity.

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