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29 March 2024
 
  » arxiv » cond-mat/0208052

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Interior Gap Superfluidity
W. Vincent Liu ; Frank Wilczek ;
Date 2 Aug 2002
Journal Phys.Rev.Lett. 90 (2003) 047002
Subject Superconductivity | cond-mat.supr-con hep-ph
AbstractWe propose a new state of matter in which the pairing interactions carve out a gap within the interior of a large Fermi ball, while the exterior surface remains gapless. This defines a system which contains both a superfluid and a normal Fermi liquid simultaneously, with both gapped and gapless quasiparticle excitations. This state can be realized at weak coupling. We predict that a cold mixture of two species of fermionic atoms with different mass will exhibit this state. For electrons in appropriate solids, it would define a material that is simultaneously superconducting and metallic.
Source arXiv, cond-mat/0208052
Other source [GID 474744] pmid12570449
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