We study a four-band model for the iron oxypnictides, in which the superconducting properties are assumed to be determined by the interband coupling between holelike and electronlike Fermi sheets. We show that reasonable parameters can account for the angle-resolved photoemission spectra, showing multiple gaps in Ba1?xKxFe2As2, and for the temperature dependence of the superfluid density. At the same time, the zero- temperature value of the superfluid density shows a conventional scaling with the number of carriers.
Multiple gaps and superfluid density from interband pairing in Iron Oxypnictides / Benfatto, L; Capone, M; Caprara, Sergio; Castellani, Claudio; DI CASTRO, Carlo. - In: PHYSICAL REVIEW. B, CONDENSED MATTER AND MATERIALS PHYSICS. - ISSN 1098-0121. - 78 (R):(2008), pp. 140502-1-140502-4. [10.1103/PhysRevB.78.140502]
Multiple gaps and superfluid density from interband pairing in Iron Oxypnictides
BENFATTO L;CAPRARA, SERGIO;CASTELLANI, Claudio;DI CASTRO, Carlo
2008
Abstract
We study a four-band model for the iron oxypnictides, in which the superconducting properties are assumed to be determined by the interband coupling between holelike and electronlike Fermi sheets. We show that reasonable parameters can account for the angle-resolved photoemission spectra, showing multiple gaps in Ba1?xKxFe2As2, and for the temperature dependence of the superfluid density. At the same time, the zero- temperature value of the superfluid density shows a conventional scaling with the number of carriers.File | Dimensione | Formato | |
---|---|---|---|
A61_pnic.pdf
solo gestori archivio
Tipologia:
Documento in Post-print (versione successiva alla peer review e accettata per la pubblicazione)
Licenza:
Tutti i diritti riservati (All rights reserved)
Dimensione
105.72 kB
Formato
Adobe PDF
|
105.72 kB | Adobe PDF | Contatta l'autore |
I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.