Magnetic and superfluid phases of confined fermions in two-dimensional optical lattices

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dc.creatorAndersen, Brian M.
dc.creatorBruun, G. M.
dc.date2007-06-25
dc.date2007-10-22
dc.date.accessioned2026-07-07T08:37:13Z
dc.date.available2026-07-07T08:37:13Z
dc.descriptionWe examine antiferromagnetic and d-wave superfluid phases of cold fermionic atoms with repulsive interactions in a two-dimensional optical lattice combined with a harmonic trapping potential. For experimentally realistic parameters, the trapping potential leads to the coexistence of magnetic and superfluid ordered phases with the normal phase. We study the intriguing shell structures arising from the competition between the magnetic and superfluid order as a function of the filling fraction. In certain cases antiferromagnetism induce superfluidity by charge redistributions. We furthermore demonstrate how these shell structures can be detected as distinct anti-bunching dips and pairing peaks in the density-density correlation function probed in expansion experiments.
dc.description4 pages, 3 figures
dc.identifierhttps://arxiv.org/abs/0706.3611
dc.identifierhttp://arxiv.org/abs/0706.3611
dc.identifierPhys. Rev. A 76, 041602(R) (2007)
dc.identifierdoi:10.1103/PhysRevA.76.041602
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/140327
dc.subjectStrongly Correlated Electrons
dc.subjectSuperconductivity
dc.titleMagnetic and superfluid phases of confined fermions in two-dimensional optical lattices
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