Surface Energy in Cold Asymmetrical Fermion Superfluids

Details Surface Energy in Cold Asymmetrical Fermion Superfluids Surface Energy in Cold Asymmetrical Fermion Superfluids

2006-01-08

arxiv.org/abs/cond-mat/0601148v6

J. Stat. Mech. P11012 (2007)

Physics

Condensed Matter

Superconductivity

12 pages, 2 figures, typos corrected, published version

Scientific paper

10.1088/1742-5468/2007/11/P11012

We derive the energy of the surface between the normal and superfluid components of a mixed phase of a system composed of two particle species with different densities. The surface energy is obtained by the integration of the free energy density in the interface between the two phases. We show that the mixed phase remains as the favored ground state over the gapless phase in weak coupling. We find that the surface energy effects emerge only at strong coupling.

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