Pairing with Unconventional Symmetry around BCS-BEC Crossover: Fermionic Atoms in 2D Optical Lattices to Correlated Electron Systems

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dc.creatorVolcko, Dusan
dc.creatorQuader, Khandker F.
dc.date2007-09-28
dc.date.accessioned2026-07-07T08:33:06Z
dc.date.available2026-07-07T08:33:06Z
dc.descriptionWe study superfluid properties of fermions on a 2D lattice using a finite-range pairing interaction derivable from an extended Hubbard model. We obtain signatures of unconventional pair-symmetry states, $d_{x^2-y^2}$ and extended-s ($s^*$), in the BCS-BEC crossover region. The fermion momentum distribution function, $v_k^2$, the ratio of the Bogoliubov coefficients, $v_k/u_k$, and the Fourier transform of $v_k^2$ are among the properties that are strikingly different for d- and $s^*$ symmetries in the crossover region. Fermionic atoms in 2D optical lattices may provide a way to observe these signatures. We discuss possible experimental ramifications of our results.
dc.description5 pages, 4 figures
dc.identifierhttps://arxiv.org/abs/0710.0023
dc.identifierhttp://arxiv.org/abs/0710.0023
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/139008
dc.subjectSuperconductivity
dc.subjectOther Condensed Matter
dc.titlePairing with Unconventional Symmetry around BCS-BEC Crossover: Fermionic Atoms in 2D Optical Lattices to Correlated Electron Systems
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