2010年12月
Phase diagram of the two-dimensional 16-band d-p model for iron-based superconductors
PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS
- ,
- ,
- 巻
- 470
- 号
- 開始ページ
- S349
- 終了ページ
- S350
- 記述言語
- 英語
- 掲載種別
- 研究論文(学術雑誌)
- DOI
- 10.1016/j.physc.2009.10.109
- 出版者・発行元
- ELSEVIER SCIENCE BV
The electronic state of the Fe(2)As(2) 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 similar to (pi, pi). The absolute values of the gap functions on the Fermi surfaces are almost isotropic but largely depend on the energy bands. (C) 2009 Elsevier B.V. All rights reserved.
- リンク情報
- ID情報
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- DOI : 10.1016/j.physc.2009.10.109
- ISSN : 0921-4534
- Web of Science ID : WOS:000286075700151