Viscosity of a two-dimensional Fermi liquid

Details Viscosity of a two-dimensional Fermi liquid Viscosity of a two-dimensional Fermi liquid

2006-03-07

arxiv.org/abs/cond-mat/0603184v1

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

4 pages, 2 figures

Scientific paper

Shear viscosity of a two-dimensional Fermi liquid is found to be a nonanalytic function of temperature. In contrast to the quasiparticle lifetime that is determined by the forward-scattering processes, the main contribution to the viscosity arises from the quasiparticle scattering in the Cooper channel. The viscosity is enhanced by the logarithmic singularity of the vertex part. This singular behavior can manifest itself in the two-dimensional electron transport, and in the momentum relaxation of fermions in atomic traps.

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