TY - JOUR
T1 - Phase diagram of the two-dimensional 16-band d-p model for iron-based superconductors
AU - Yanagi, Y.
AU - Yamakawa, Y.
AU - Ono, Y.
N1 - Funding Information:
The authors thank M. Sato, H. Kontani, S. Onari and K. Kuroki for valuable discussions and comments. This work was partially supported by the Grant-in-Aid for Scientific Research from the Ministry of Education, Culture, Sports, Science and Technology .
PY - 2010/12
Y1 - 2010/12
N2 - 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.
AB - 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.
KW - 16-Band d-p model
KW - Gap function
KW - Pairing symmetries
KW - Pnictides
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U2 - 10.1016/j.physc.2009.10.109
DO - 10.1016/j.physc.2009.10.109
M3 - Article
AN - SCOPUS:78649716165
SN - 0921-4534
VL - 470
SP - S349-S350
JO - Physica C: Superconductivity and its Applications
JF - Physica C: Superconductivity and its Applications
IS - SUPPL.1
ER -