Hubbard model with spin-orbit coupling: Lattice gauge theory approach (Articolo in rivista)

Type
Label
  • Hubbard model with spin-orbit coupling: Lattice gauge theory approach (Articolo in rivista) (literal)
Anno
  • 2012-01-01T00:00:00+01:00 (literal)
Alternative label
  • Giuseppe Guarnaccia a, Canio Noce b (2012)
    Hubbard model with spin-orbit coupling: Lattice gauge theory approach
    in Physical review. B, Condensed matter and materials physics
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Giuseppe Guarnaccia a, Canio Noce b (literal)
Pagina inizio
  • 064409-1 (literal)
Pagina fine
  • 064409-7 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 86 (literal)
Rivista
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#pagineTotali
  • 7 (literal)
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  • 6 (literal)
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  • a Dipartimento di Fisica \"E. R. Caianiello\", Universita' di Salerno, I-84084 Fisciano (Salerno), Italy b SPIN-CNR, I-84084 Fisciano (Salerno), Italy and Dipartimento di Fisica \"E. R. Caianiello\", Universit`a di Salerno, I-84084 Fisciano (Salerno), Italy (literal)
Titolo
  • Hubbard model with spin-orbit coupling: Lattice gauge theory approach (literal)
Abstract
  • We study the symmetry properties of the Hubbard model with spin-orbit interactions of Rashba and Dresselhaus type. These interactions break the rotational symmetry in spin space, so that the magnetic order cannot be excluded by using the Bogoliubov inequality method. Nevertheless, we rigorously show that the existence of the magnetic long-range orders may be ruled out when the Rashba and Dresselhaus coupling constants are equal in modulus, whereas the eta-pairing can be always ruled out, regardless of the microscopic parameters of the model. These results are obtained by imposing locally the SU(2) gauge symmetry on the lattice, and rewriting the spin-orbit interactions in such a way that they are included in the path ordered of the gauge field on lattice. (literal)
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