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

Autor:	Yanagi, Y., Yamakawa, Y., Ōno, Y.
Rok vydání:	2008
Předmět:	Condensed Matter - Strongly Correlated Electrons Condensed Matter - Superconductivity
Zdroj:	J. Phys. Soc. Jpn. 77 (2008) Suppl. C, pp. 149-150
Druh dokumentu:	Working Paper
DOI:	10.1143/JPSJS.77SC.149
Popis:	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. Comment: 2 pages, 4 figures; Proceedings of the Int. Symposium on Fe-Oxipnictide Superconductors (Tokyo, 28-29th June 2008)
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/0808.1192 Zobrazit plný text záznamu View this record from Arxiv