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Gapless Surfaces in Anisotropic Superfluids | | E. Gubankova
; E. Mishchenko
; F. Wilczek
; | | Date: |
9 Nov 2004 | | Subject: | Superconductivity | cond-mat.supr-con hep-ph | | Abstract: | We demonstrate when p-wave pairing occurs between species whose free Fermi surfaces are mismatched the gap generally vanishes over a two-dimensional surface. We present detailed calculations of condensation energy, superfluid density (Meissner mass) and specific heat for such states. We also consider stability against separation into mixed phases. According to several independent criteria that can be checked at weak coupling, the resulting ``breached’’ state appears to be stable over a substantial range of parameters. The simple models we consider are homogeneous in position space, and break rotation symmetry spontaneously. They should be realizable in cold atom systems. | | Source: | arXiv, cond-mat/0411238 | | Services: | Forum | Review | PDF | Favorites | |
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