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  1. 050 理学部
  2. 10 学術雑誌論文
  3. 10 査読済論文
  1. 0 資料タイプ別
  2. 01 学術雑誌論文

Novel s-wave due to coexisting ferro- and antiferromagnetic fluctuations in iron pnictides

http://hdl.handle.net/10191/47681
cc3d1a54-dfd7-419d-8748-2ed9ea39096c
名前 / ファイル ライセンス アクション
592_012077.pdf 592_012077.pdf (137.9 kB)
Item type 学術雑誌論文 / Journal Article(1)
公開日 2017-07-18
タイトル
タイトル Novel s-wave due to coexisting ferro- and antiferromagnetic fluctuations in iron pnictides
タイトル
言語 en
タイトル Novel s-wave due to coexisting ferro- and antiferromagnetic fluctuations in iron pnictides
言語
言語 eng
資源タイプ
資源 http://purl.org/coar/resource_type/c_6501
タイプ journal article
著者 Ishizuka, Jun

× Ishizuka, Jun

WEKO 6821

Ishizuka, Jun

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Yamada, Takemi

× Yamada, Takemi

WEKO 6822

Yamada, Takemi

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Ono, Yoshiaki

× Ono, Yoshiaki

WEKO 62

Ono, Yoshiaki

Search repository
抄録
内容記述タイプ Abstract
内容記述 The five-orbital Hubbard model for iron pnictides is investigated by using the dynamical meanfield theory (DMFT) in conjunction with the Eliashberg equation in the strong correlation regime where the ferromagnetic (FM) and antiferromagnetic (AFM) fluctuations are simultaneously enhanced. When the intraorbital Coulomb interaction is a little smaller than the interorbital one, the FM fluctuation is largely enhanced due to the significant orbital dependence of the vertex correction and becomes comparable to the AFM fluctuation, in contrast to the result from the random phase approximation where the AFM fluctuation is exclusively enhanced due to the nesting between hole and electron Fermi surfaces (FSs). The enhanced FM fluctuation induces the large repulsive pairing interaction between inner and outer hole FSs while the AFM fluctuation does between the hole and electron FSs. The latter is partially counteracted by the attractive pairing interaction mediated by the antiferro-orbital fluctuation. The resulting pairing state is found to be a novel s-wave in which the gap function of the inner hole FS has the opposite sign to that of the outer hole and electron FSs.
書誌情報 Journal of Physics: Conference Series
en : Journal of Physics: Conference Series

巻 592, 号 1, p. 012077-1-012077-5, 発行日 2015-03
出版者
出版者 IOP Publishing
ISSN
収録物識別子タイプ ISSN
収録物識別子 17426588
書誌レコードID
関連識別子
識別子タイプ NCID
関連識別子 BA87701391
DOI
関連識別子
識別子タイプ DOI
関連識別子 info:doi/10.1088/1742-6596/592/1/012077
著者版フラグ
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