Electronic states and pairing symmetry in the two-dimensional 16 band d-p model for iron-based superconductor

Details Electronic states and pairing symmetry in the two-dimensional 16 band d-p model for iron-based superconductor Electronic states and pairing symmetry in the two-dimensional 16 band d-p model for iron-based superconductor

2008-08-08

arxiv.org/abs/0808.1192v3

J. Phys. Soc. Jpn. 77 (2008) Suppl. C, pp. 149-150

Physics

Condensed Matter

Strongly Correlated Electrons

2 pages, 4 figures; Proceedings of the Int. Symposium on Fe-Oxipnictide Superconductors (Tokyo, 28-29th June 2008)

Scientific paper

The electronic states of the FeAs plane in iron-based superconductors are investigated on the basis of the two-dimensional 16-band d-p model, where the tight-binding parameters are determined so as to fit the band structure obtained by the density functional calculation for LaFeAsO. The model includes the Coulomb interaction on a Fe site: the intra- and inter-orbital direct terms U and U', the exchange coupling J and the pair-transfer J'. Within the random phase approximation (RPA), we discuss the pairing symmetry of possible superconducting states including s-wave and d-wave pairing on the U'-J plane.

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