Coexistence of spin polarization and pairing correlations in metallic grains (Articolo in rivista)

Type
Label
  • Coexistence of spin polarization and pairing correlations in metallic grains (Articolo in rivista) (literal)
Anno
  • 2006-01-01T00:00:00+01:00 (literal)
Alternative label
  • Ying, ZJ; Cuoco, M; Noce, C; Zhou, HQ (2006)
    Coexistence of spin polarization and pairing correlations in metallic grains
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Ying, ZJ; Cuoco, M; Noce, C; Zhou, HQ (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 74 (literal)
Note
  • ISI Web of Science (WOS) (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • CNR, INFM, Lab Reg SuperMat, Baronissi, SA, Italy; Univ Salerno, Dipartimento Fis ER Caianiello, I-84081 Baronissi, Italy; Univ Queensland, Sch Phys Sci, Brisbane, Qld 4072, Australia (literal)
Titolo
  • Coexistence of spin polarization and pairing correlations in metallic grains (literal)
Abstract
  • We investigate the competition between magnetic depairing interactions, due to spin-exchange mechanism and/or to spin-dependent asymmetric bandwidths, and pairing coupling in metallic grains. We present a detailed analysis of the quantum ground state in different regimes arising from the interplay between ferromagnetic and pairing correlations for different fillings. We find out that the occurrence of a ground state with coexisting spin-polarization and pairing correlations is enhanced when the asymmetric spin-dependent distribution of the single-particle energies is considered. The mechanisms leading to such a stable quantum state are finally clarified. (literal)
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