Fulde-Ferrell-Larkin-Ovchinnikov pairing in one-dimensional optical lattices (Articolo in rivista)

Type
Label
  • Fulde-Ferrell-Larkin-Ovchinnikov pairing in one-dimensional optical lattices (Articolo in rivista) (literal)
Anno
  • 2008-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1103/PhysRevB.77.245105 (literal)
Alternative label
  • Rizzi, M; Polini, M; Cazalilla, MA; Bakhtiari, MR; Tosi, MP; Fazio, R (2008)
    Fulde-Ferrell-Larkin-Ovchinnikov pairing in one-dimensional optical lattices
    in Physical review. B, Condensed matter and materials physics
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Rizzi, M; Polini, M; Cazalilla, MA; Bakhtiari, MR; Tosi, MP; Fazio, R (literal)
Pagina inizio
  • 245105 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 77 (literal)
Rivista
Note
  • ISI Web of Science (WOS) (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • \"[Rizzi, M.] Max Planck Inst Quantum Opt, D-85748 Garching, Germany; [Rizzi, M.; Polini, Marco; Tosi, M. P.; Fazio, Rosario] INFM, CNR, NEST, I-56126 Pisa, Italy; [Rizzi, M.; Polini, Marco; Tosi, M. P.; Fazio, Rosario] Scuola Normale Super Pisa, I-56126 Pisa, Italy; [Cazalilla, M. A.] DIPC, San Sebastian 20018, Spain; [Bakhtiari, M. R.] Univ Jyvaskyla, Dept Phys, Nanosci Ctr, Jyvaskyla 40014, Finland; [Fazio, Rosario] SISSA, Int Sch Adv Studies, I-34014 Trieste, Italy (literal)
Titolo
  • Fulde-Ferrell-Larkin-Ovchinnikov pairing in one-dimensional optical lattices (literal)
Abstract
  • Spin-polarized attractive Fermi gases in one-dimensional (1D) optical lattices are expected to be remarkably good candidates for the observation of the Fulde-Ferrell-Larkin-Ovchinnikov (FFLO) phase. We model these systems with an attractive Hubbard model with population imbalance. By means of the density-matrix renormalization-group method, we compute the pairing correlations as well as the static spin and charge structure factors in the whole range from weak to strong coupling. We demonstrate that pairing correlations exhibit quasi-long-range order and oscillations at the wave number expected from the FFLO theory. However, we also show by numerically computing the mixed spin-charge static structure factor that charge and spin degrees of freedom appear to be coupled already for a small imbalance. We discuss the consequences of this coupling for the observation of the FFLO phase, as well as for the stabilization of the quasi-long-range order into long-range order by coupling many identical 1D systems, such as in quasi-1D optical lattices. (literal)
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