Coulomb drag at zero temperature

Alex Levchenko, Alex Kamenev

Research output: Contribution to journalArticlepeer-review

17 Scopus citations

Abstract

We show that the Coulomb drag effect exhibits saturation at small temperatures, when calculated to the third order in the interlayer interactions. The zero-temperature transresistance is of the order h/(e2g3), where g is the dimensionless sheet conductance. The effect is therefore the strongest in low mobility samples. This behavior should be contrasted with the conventional (second order) prediction that the transresistance scales as a certain power of temperature and is (almost) mobility independent. The result demonstrates that the zero-temperature drag is not an unambiguous signature of a strongly coupled state in double-layer systems.

Original languageEnglish (US)
Article number026805
JournalPhysical review letters
Volume100
Issue number2
DOIs
StatePublished - Jan 16 2008

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