Spectroscopic and thermodynamic properties in a four-band model for pnictides (Articolo in rivista)

Type

• Articolo in rivista (Classe)
• Prodotto della ricerca (Classe)

Label

• Spectroscopic and thermodynamic properties in a four-band model for pnictides (Articolo in rivista) (literal)

Anno

• 2009-01-01T00:00:00+01:00 (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi

• 10.1103/PhysRevB.80.214522 (literal)

Alternative label

• Benfatto L. (1,2,3), Cappelluti E. (2,3), Castellani C. (3,2) (2009)
  Spectroscopic and thermodynamic properties in a four-band model for pnictides
  in Physical review. B, Condensed matter and materials physics
  (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori

• Benfatto L. (1,2,3), Cappelluti E. (2,3), Castellani C. (3,2) (literal)

Pagina inizio

• 214522 (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#url

• http://prb.aps.org/abstract/PRB/v80/i21/e214522 (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume

• 80 (literal)

Rivista

• Physical review. B, Condensed matter and materials physics (Rivista)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#note

• fasc. (9). American Physical Society. Anche in Virtual Journal of Applications of Superconductivity (January 1, 2010). (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#pagineTotali

• 12 (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroFascicolo

• 21 (literal)

Note

• Scopus (literal)
• Google Scholar (literal)
• ISI Web of Science (WOS) (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni

• 1) Centro Studi e Ricerche “Enrico Fermi,” via Panisperna 89/A, 00184 Rome, Italy; 2) SMC Research Center, CNR-INFM, and ISC-CNR, via dei Taurini 19, 00185 Rome, Italy; 3) Dipartimento di Fisica, Università “La Sapienza,” Piazzale Aldo Moro 2, 00185 Rome, Italy (literal)

Titolo

• Spectroscopic and thermodynamic properties in a four-band model for pnictides (literal)

Abstract

• In this paper we provide a comprehensive analysis of different properties of pnictides both in the normal and superconducting state, with a particular focus on the optimally doped Ba1-xKxFe2As2 system. We show that, by using the band dispersions experimentally measured by angle-resolved photoemission spectroscopy, a four-band Eliashberg model in the intermediate-coupling regime can account for both the measured hierarchy of the gaps and for several spectroscopic and thermodynamic signatures of low-energy renormalization. These include the kinks in the band dispersion and the effective masses determined via specific-heat and superfluid-density measurements. We also show that, although an intermediate-coupling Eliashberg approach is needed to account for the magnitude of the gaps, the temperature behavior of the thermodynamic quantities does not show in this regime a significant deviation with respect to weak-coupling BCS calculations. This can explain the apparent success of two-band BCS fits of experimental data reported often in the literature. (literal)

Prodotto di

• MD.P02.011.001 La complessità nella fisica dello stato solido (MD.P02.011.003) (Modulo)

Autore CNR

• CLAUDIO CASTELLANI (Unità di personale esterno)
• EMMANUELE CAPPELLUTI (Unità di personale interno)
• LARA BENFATTO (Persona)

Insieme di parole chiave

• Keywords of "Spectroscopic and thermodynamic properties in a four-band model for pnictides" (Insieme di parole chiave)

Incoming links:

Autore CNR di

• EMMANUELE CAPPELLUTI (Unità di personale interno)
• LARA BENFATTO (Persona)
• CLAUDIO CASTELLANI (Unità di personale esterno)

Prodotto

• MD.P02.011.001 La complessità nella fisica dello stato solido (MD.P02.011.003) (Modulo)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#rivistaDi

• Physical review. B, Condensed matter and materials physics (Rivista)

Insieme di parole chiave di

• Keywords of "Spectroscopic and thermodynamic properties in a four-band model for pnictides" (Insieme di parole chiave)