Phase diagram of the two-dimensional 16-band d-p model for iron-based superconductors

Y. Yanagi, Y. Yamakawa, Y. Ono

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)


The 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.

Original languageEnglish
Pages (from-to)S349-S350
JournalPhysica C: Superconductivity and its applications
Issue numberSUPPL.1
Publication statusPublished - 2010 Dec
Externally publishedYes


  • 16-Band d-p model
  • Gap function
  • Pairing symmetries
  • Pnictides

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Energy Engineering and Power Technology
  • Electrical and Electronic Engineering


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