2022-08-17T10:54:45Zhttps://niigata-u.repo.nii.ac.jp/oaioai:niigata-u.repo.nii.ac.jp:000022552021-03-01T20:41:19ZPhase Diagram of the Two-dimensional 16-band d-p Model for Iron-based SuperconductorsPhase Diagram of the Two-dimensional 16-band d-p Model for Iron-based SuperconductorsYanagi, Y.7656Yamakawa, Y.7657Ono, Y.62ron-based superconductors16-Band d–p modelpairing symmetrygap functionThe electronic state of the Fe2As2 plane in iron-based superconductors is investigated on the basis of the two-dimensional 16-band d –p model. Using the random phase approximation for the on-site Coulomb interaction between Fe d electrons, we obtain the phase diagram including the magnetic ordered states and the superconductivity. It is found that the s±-wave superconductivity, where the gap functions have different signs between the electron pockets and the hole pockets, is realized near the incommensurate magnetic ordered phase with q～(π,π). The absolute values of the gap functions on the Fermi surfaces are almost isotropic but largely depend on the energy bands.journal articleElsevier2010-12application/pdfPhysica. C, Superconductivity and its applicationsSupplement 1470S349S350Physica. C, Superconductivity and its applicationsAA1146198409214534https://niigata-u.repo.nii.ac.jp/record/2255/files/982.pdfenginfo:doi/10.1016/j.physc.2009.10.109