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Effect of Electron-Phonon Interactions on Orbital Fluctuations in Iron-Based Superconductors
http://hdl.handle.net/10228/00006800
http://hdl.handle.net/10228/00006800f28f5a33-60ea-4649-9b6e-41f9c7cb9078
| 名前 / ファイル | ライセンス | アクション |
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scunit-2018_03.pdf (347.4 kB)
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| アイテムタイプ | 学術雑誌論文 = Journal Article(1) | |||||||||||||
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| 公開日 | 2018-05-31 | |||||||||||||
| 資源タイプ | ||||||||||||||
| 資源タイプ識別子 | http://purl.org/coar/resource_type/c_6501 | |||||||||||||
| 資源タイプ | journal article | |||||||||||||
| タイトル | ||||||||||||||
| タイトル | Effect of Electron-Phonon Interactions on Orbital Fluctuations in Iron-Based Superconductors | |||||||||||||
| 言語 | en | |||||||||||||
| 言語 | ||||||||||||||
| 言語 | eng | |||||||||||||
| 著者 |
Nomura, Yusuke
× Nomura, Yusuke× 中村, 和磨
WEKO
20202
× Arita, Ryotaro |
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| 抄録 | ||||||||||||||
| 内容記述タイプ | Abstract | |||||||||||||
| 内容記述 | To investigate the possibility of whether electron-phonon coupling can enhance orbital fluctuations in iron-based superconductors, we develop an ab initio method to construct the effective low-energy models including the phonon-related terms. With the derived effective electron-phonon interactions and phonon frequencies, we estimate the static part (ω = 0) of the phonon-mediated effective on site intra-or interorbital electron-electron attractions as ∼ − 0.4 eV and exchange or pair-hopping terms as ∼ − 0.02 eV. We analyze the model with the derived interactions together with the Coulomb repulsions within the random phase approximation. We find that the enhancement of the orbital fluctuations due to the electron-phonon interactions is small, and that the spin fluctuations enhanced by the Coulomb repulsions dominate. It leads to the superconducting state with the sign reversal in the gap functions (s ± wave). | |||||||||||||
| 言語 | en | |||||||||||||
| 書誌情報 |
en : Physical Review Letters 巻 112, 号 2, p. 027002-1-027002-5, 発行日 2014-01-15 |
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| 出版社 | ||||||||||||||
| 出版者 | American Physical Society | |||||||||||||
| 言語 | en | |||||||||||||
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| 関連タイプ | isIdenticalTo | |||||||||||||
| 識別子タイプ | DOI | |||||||||||||
| 関連識別子 | https://doi.org/10.1103/PhysRevLett.112.027002 | |||||||||||||
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| 関連タイプ | isIdenticalTo | |||||||||||||
| 識別子タイプ | URI | |||||||||||||
| 関連識別子 | https://cir.nii.ac.jp/crid/1050001338911970944 | |||||||||||||
| NCID | ||||||||||||||
| 収録物識別子タイプ | NCID | |||||||||||||
| 収録物識別子 | AA00773679 | |||||||||||||
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| 収録物識別子タイプ | EISSN | |||||||||||||
| 収録物識別子 | 1079-7114 | |||||||||||||
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| 収録物識別子タイプ | PISSN | |||||||||||||
| 収録物識別子 | 0031-9007 | |||||||||||||
| 著作権関連情報 | ||||||||||||||
| 権利情報 | Copyright (c) 2014 American Physical Society | |||||||||||||
| 出版タイプ | ||||||||||||||
| 出版タイプ | VoR | |||||||||||||
| 出版タイプResource | http://purl.org/coar/version/c_970fb48d4fbd8a85 | |||||||||||||
| 査読の有無 | ||||||||||||||
| 値 | yes | |||||||||||||
| 研究者情報 | ||||||||||||||
| URL | https://hyokadb02.jimu.kyutech.ac.jp/html/100000601_ja.html | |||||||||||||
| 連携ID | ||||||||||||||
| 値 | 7064 | |||||||||||||
