Hydrodynamic Coulomb drag of strongly correlated electron liquids

S. S. Apostolov, A. Levchenko, A. V. Andreev

Research output: Contribution to journalArticlepeer-review

17 Citations (Scopus)

Abstract

We develop a theory of Coulomb drag in ultraclean double layers with strongly correlated carriers. In the regime where the equilibration length of the electron liquid is shorter than the interlayer spacing the main contribution to the Coulomb drag arises from hydrodynamic density fluctuations. The latter consist of plasmons driven by fluctuating longitudinal stresses, and diffusive modes caused by temperature fluctuations and thermal expansion of the electron liquid. We express the drag resistivity in terms of the kinetic coefficients of the electron fluid. Our results are nonperturbative in interaction strength and do not assume Fermi-liquid behavior of the electron liquid.

Original languageEnglish
Article number121104
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume89
Issue number12
DOIs
Publication statusPublished - 11 Mar 2014
Externally publishedYes

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