Strongly correlated superconductivity arising in a pseudogap metal (Articolo in rivista)

Type
Label
  • Strongly correlated superconductivity arising in a pseudogap metal (Articolo in rivista) (literal)
Anno
  • 2008-01-01T00:00:00+01:00 (literal)
Alternative label
  • Schiro, M; Capone, M; Fabrizio, M; Castellani, C Schiró M., Capone M., Fabrizio M., Castellani C. (2008)
    Strongly correlated superconductivity arising in a pseudogap metal
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Schiro, M; Capone, M; Fabrizio, M; Castellani, C Schiró M., Capone M., Fabrizio M., Castellani C. (literal)
Pagina inizio
  • 104522 (literal)
Pagina fine
  • [13] (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 77 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#note
  • fasc. (10). American Physical Society (APS). (literal)
Note
  • ISI Web of Science (WOS) (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • \"[Schiro, Marco; Fabrizio, Michele] SISSA, I-34014 Trieste, Italy; [Schiro, Marco; Fabrizio, Michele] CNR INFM, CRS Democritos, I-34014 Trieste, Italy; [Capone, Massimo; Castellani, Claudio] Univ Roma La Sapienza, I-00185 Rome, Italy; [Capone, Massimo; Castellani, Claudio] CNR INFM, SMC, I-00185 Rome, Italy; [Capone, Massimo] CNR, Ist Sistemi Complessi, I-00185 Rome, Italy; [Fabrizio, Michele] Abdus Salam Int Ctr Theoret Phys, I-34014 Trieste, Italy (literal)
Titolo
  • Strongly correlated superconductivity arising in a pseudogap metal (literal)
Abstract
  • We solve by dynamical mean field theory a toy model that has a phase diagram strikingly similar to that of high-T-c superconductors: a bell-shaped superconducting region adjacent to the Mott insulator and a normal phase that evolves from a conventional Fermi liquid to a pseudogapped semimetal as the Mott transition is approached. Guided by the physics of the impurity model that is self-consistently solved within dynamical mean field theory, we introduce an analytical ansatz to model the dynamical behavior across the various phases which fits the numerical data very accurately. The ansatz is based on the assumption that the wave-function renormalization, which is very severe, especially in the pseudogap phase close to the Mott transition, is perfectly canceled by the vertex corrections in the Cooper pairing channel. A remarkable outcome is that a superconducting state can develop even from a pseudogapped normal state in which there are no low-energy quasiparticles. The overall physical scenario that emerges, although unraveled in a specific model and in an infinite-coordination Bethe lattice, can be interpreted in terms of arguments general enough to suggest that it can be realized in other correlated systems. (literal)
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