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Three-orbital Model for Fe-Pnictides

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Abstract

We formulate and study the three-orbital model for iron-based superconductors. Results for the band structure, Fermi surface, and the spin susceptibility in both normal and superconducting s ± states are presented. We also discuss the pairing interaction and show that the dominant part of it should come from the intraorbital scattering.

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Acknowledgements

Partial support was provided by the Presisium of RAS program “Quantum mesoscopical and disordered structures” N 20.7, Grant “Leading scientific schools of Russia” (NSh 1044-2012.2), RFBR (Grant No. 12-02-31534 and 13-02-01395), Program of SB RAS #44, FCP Scientific and Research-and-Educational Personnel of Innovative Russia for 2009–2013 (GK 16.740.12.0731), and the Siberian Federal University (Theme N F-11). I.E. acknowledges support of the SFB Transregio 12, Merkur Foundation, and German Academic Exchange Service (DAAD PPP USA No. 50750339). M.M.K. acknowledges support from The Dynasty Foundation and ICFPM.

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Correspondence to M. M. Korshunov.

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Korshunov, M.M., Togushova, Y.N. & Eremin, I. Three-orbital Model for Fe-Pnictides. J Supercond Nov Magn 26, 2665–2668 (2013). https://doi.org/10.1007/s10948-013-2156-x

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  • DOI: https://doi.org/10.1007/s10948-013-2156-x

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