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Origin of the material dependence of Tc in the single-layered cuprates
https://repository.lib.tottori-u.ac.jp/records/7326
https://repository.lib.tottori-u.ac.jp/records/73264cf4d6b5-62ec-4240-908a-e0f01023ce9a
| 名前 / ファイル | ライセンス | アクション |
|---|---|---|
prb85_064501.pdf (3.2 MB)
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| Item type | 学術雑誌論文 / Journal Article(1) | |||||
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| 公開日 | 2019-09-19 | |||||
| タイトル | ||||||
| タイトル | Origin of the material dependence of Tc in the single-layered cuprates | |||||
| 言語 | en | |||||
| 言語 | ||||||
| 言語 | eng | |||||
| 資源タイプ | ||||||
| 資源タイプ | journal article | |||||
| 著者 |
Sakakibara, Hirofumi
× Sakakibara, Hirofumi× Usui, Hidetomo× Kuroki, Kazuhiko× Arita, Ryotaro× Aoki, Hideo |
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| 著者所属（英） | ||||||
| 言語 | en | |||||
| 値 | Department of Engineering Science, The University of Electro-Communications | |||||
| 著者所属（英） | ||||||
| 言語 | en | |||||
| 値 | Department of Applied Physics and Chemistry, The University of Electro-Communications | |||||
| 著者所属（英） | ||||||
| 言語 | en | |||||
| 値 | Department of Engineering Science, The University of Electro-Communications / JST, TRIP | |||||
| 著者所属（英） | ||||||
| 言語 | en | |||||
| 値 | Department of Applied Physics, The University of Tokyo / JST, TRIP / JST, CREST | |||||
| 著者所属（英） | ||||||
| 言語 | en | |||||
| 値 | Department of Physics, The University of Tokyo / JST, TRIP | |||||
| 抄録 | ||||||
| 内容記述タイプ | Other | |||||
| 内容記述 | In order to understand the material dependence of Tc within the single-layered cuprates, we study a two-orbital model that considers both dx2-y2 and dz2 orbitals. We reveal that a hybridization of dz2 on the Fermi surface substantially affects Tc in the cuprates, where the energy difference ΔE between the dx2-y2 and the dz2 orbitals is identified to be the key parameter that governs both the hybridization and the shape of the Fermi surface. A smaller ΔE tends to suppress Tc through a larger hybridization, whose effect supersedes the effect of diamond-shaped (better-nested) Fermi surface. The mechanism of the suppression of d-wave superconductivity due to dz2 orbital mixture is clarified from the viewpoint of the ingredients involved in the Eliashberg equation, that is, the Green's functions and the form of the pairing interaction described in the orbital representation. The conclusion remains qualitatively the same if we take a three-orbital model that incorporates the Cu 4s orbital explicitly, where the 4s orbital is shown to have an important effect of making the Fermi surface rounded. We have then identified the origin of the material and lattice-structure dependence of ΔE, which is shown to be determined by the energy difference ΔEd between the two Cu 3d orbitals (primarily governed by the apical oxygen height) and the energy difference ΔEp between the in-plane and apical oxygens (primarily governed by the interlayer separation d). | |||||
| 書誌情報 |
Physical review. Third series. B, Condensed matter and materials physics en : Physical review. Third series. B, Condensed matter and materials physics 巻 85, p. 064501, 発行日 2012-02-01 |
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| 出版者 | ||||||
| 出版者 | American Physical Society | |||||
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| 収録物識別子タイプ | ISSN | |||||
| 収録物識別子 | 24699950 | |||||
| 書誌レコードID | ||||||
| 収録物識別子タイプ | NCID | |||||
| 収録物識別子 | AA11187113 | |||||
| DOI | ||||||
| 関連タイプ | isIdenticalTo | |||||
| 識別子タイプ | DOI | |||||
| 関連識別子 | 10.1103/PhysRevB.85.064501 | |||||
| 権利 | ||||||
| 権利情報 | ©2012 American Physical Society | |||||
| 情報源 | ||||||
| 関連名称 | H. Sakakibara, H. Usui, K. Kuroki, R. Arita and H. Aoki. Origin of the material dependence of Tc in the single-layered cuprates. Physical review. Third series. B, Condensed matter and materials physics. 2012, 85, 064501 | |||||
| 関連サイト | ||||||
| 識別子タイプ | URI | |||||
| 関連識別子 | https://journals.aps.org/prb/abstract/10.1103/PhysRevB.85.064501 | |||||
| 関連名称 | https://journals.aps.org/prb/abstract/10.1103/PhysRevB.85.064501 | |||||
| 著者版フラグ | ||||||
| 出版タイプ | VoR | |||||
