Multiple gaps and superfluid density from interband pairing in a four-band model of the iron oxypnictides

被引：39

作者：

Benfatto, L. ^{[1
,2
,3
]}

Capone, M. ^{[2
,3
,4
]}

Caprara, S. ^{[2
,3
]}

Castellani, C. ^{[2
,3
]}

Di Castro, C. ^{[2
,3
]}

机构：

[1] Ctr Studi & Ric Enrico Fermi, I-00184 Rome, Italy

[2] Univ Roma La Sapienza, CNR, INFM, CRS SMC, I-00185 Rome, Italy

[3] Univ Roma La Sapienza, Dipartimento Fis, I-00185 Rome, Italy

[4] CNR, ISC, I-00185 Rome, Italy

来源：

PHYSICAL REVIEW B | 2008年 / 78卷 / 14期

关键词：

D O I：

10.1103/PhysRevB.78.140502

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

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.

引用

页数：4

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