2003•arXiv (Cornell University)Open access
Breached Pair Superfluidity in a Two-component Fermi Gas of Atoms
Bimlendu Deb, Amruta Mishra, Hiranmaya Mishra, Prasanta K. Panigrahi
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Abstract
A new superfluid phase in Fermi matter, termed as interior gap (IG) or breached pair, has been recently predicted by Liu and Wilczek [Phys.Rev.Lett. {\bf 90} 047002 (2003)]. This results from pairing between fermions of two species having essentially different Fermi surfaces. Using a nonperturbative variational approach, we analyze some underlying features of this superfluid. We propose an experiment for creating such superfluidity in two-component Fermi gas of $^6$Li atoms in an optical trap. We also suggest a method for probing both the usual BCS-type and IG superfluidity in atomic Fermi gases based on Bragg scattering of laser photons.