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Two types ofs-wave pairing due to magnetic and orbital fluctuations in the two-dimensional 16-bandd−pmodel for iron-based superconductors

Yuki Yanagi, Youichi Yamakawa, Yoshiaki Ōno
2010 Physical Review B  

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2009 pre-print arXiv:0912.2392v3 fatcat:xovkkurt6rfgfcigezwa4aqmba

Other Versions

2009 pre-print
arXiv:0912.2392v1 fatcat:zc7vsohmznfszfovobxspqo3ve
2010 accepted
arXiv:0912.2392v4 fatcat:47nyp3bkm5ez7kteheobrd3jry
2009 pre-print
arXiv:0912.2392v2 fatcat:tiijfhecqvdm7lni66dwy25g5y
We study superconductivity in the two-dimensional 16-band d-p model extracted from a tight-binding fit to the band structure of LaFeAsO, using the random phase approximation. When the intraorbital repulsion U is larger than the interorbital one U', an extended s-wave (s+--wave) pairing with sign reversal of order parameter is mediated by antiferromagnetic spin fluctuations, while when UU'.
doi:10.1103/physrevb.81.054518 fatcat:itp5ruiapjguxka7zocuzeshiq
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Yuki Yanagi, Youichi Yamakawa, Yoshiaki Ōno. "Two types ofs-wave pairing due to magnetic and orbital fluctuations in the two-dimensional 16-bandd−pmodel for iron-based superconductors." Physical Review B 81.5 (2010)