Coulomb drag in graphene single layers separated by a thin spacer

Details Coulomb drag in graphene single layers separated by a thin spacer Coulomb drag in graphene single layers separated by a thin spacer

2011-05-12

arxiv.org/abs/1105.2534v2

Phys. Rev. B 84, 041407(R) (2011)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

final version; more details on the solution of electrostatic problem and some references are added

Scientific paper

10.1103/PhysRevB.84.041407

Motivated by very recent studies of Coulomb drag in grahene-BN-graphene system we develop a theory of Coulomb drag for the Fermi liquid regime, for the case when the ratio of spacer thickness $d$ to the Fermi wavelength of electrons is arbitrary. The concentration ($n$) and thickness dependence of the drag resistivity is changed from $n^{-3}d^{-4}$ for the thick spacer to $n^{-1}|\ln{(nd^2)}|$ for the thin one.

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