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First principles band structure and FLEX approach to the pressure effect on Tc of the cuprate superconductors
https://repository.lib.tottori-u.ac.jp/records/7036
https://repository.lib.tottori-u.ac.jp/records/70363dc7a344-7c6a-4374-94a5-681f81c156e9
| 名前 / ファイル | ライセンス | アクション |
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jpcs454(1)_012021.pdf (799.2 kB)
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| Item type | 会議発表論文 / Conference Paper(1) | |||||
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| 公開日 | 2019-09-19 | |||||
| タイトル | ||||||
| タイトル | First principles band structure and FLEX approach to the pressure effect on Tc of the cuprate superconductors | |||||
| 言語 | en | |||||
| 言語 | ||||||
| 言語 | eng | |||||
| 資源タイプ | ||||||
| 資源タイプ | conference paper | |||||
| 著者 |
Sakakibara, Hirofumi
× Sakakibara, Hirofumi× Suzuki, Katsuhiro× Usui, Hidetomo× Kuroki, Kazuhiko× Arita, Ryotaro× Scalapino, Douglas J.× 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 Engineering Science, The University of Electro-Communications | |||||
| 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 Engineering Science, The University of Electro-Communications | |||||
| 著者所属（英） | ||||||
| 言語 | en | |||||
| 値 | Physics Department, University of California | |||||
| 著者所属（英） | ||||||
| 言語 | en | |||||
| 値 | Department of Physics, The University of Tokyo | |||||
| 著者所属（英） | ||||||
| 言語 | en | |||||
| 値 | Department of Engineering Science, The University of Electro-Communications | |||||
| 抄録 | ||||||
| 内容記述タイプ | Other | |||||
| 内容記述 | High-temperature cuprate superconductors have been known to exhibit significant pressure effects. In order to fathom the origin of why and how Tc is affected by pressure, we have recently studied the pressure effects on Tc adopting a model that contains two copper d-orbitals derived from first-principles band calculations, where the dz2 orbital is considered on top of the usually considered dx2-y2 orbital. In that paper, we have identified two origins for the Tc enhancement under hydrostatic pressure: (i) while at ambient pressure the smaller the hybridization of other orbital components the higher the Tc, an application of pressure acts to reduce the multiorbital mixing on the Fermi surface, which we call the orbital distillation effect, and (ii) the increase of the band width with pressure also contributes to the enhancement. In the present paper, we further elaborate the two points. As for point (i), while the reduction of the apical oxygen height under pressure tends to increase the dz2 mixture, hence to lower Tc, here we show that this effect is strongly reduced in bi-layer materials due to the pyramidal coordination of oxygen atoms. As for point (ii), we show that the enhancement of Tc due to the increase in the band width is caused by the effect that the many-body renormalization arising from the self-energy is reduced. | |||||
| 書誌情報 |
Journal of physics. Conference series en : Journal of physics. Conference series 巻 454, 号 1, p. 012021, 発行日 2013 |
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| 出版者 | ||||||
| 出版者 | IOP Publishing Ltd | |||||
| ISSN | ||||||
| 収録物識別子タイプ | ISSN | |||||
| 収録物識別子 | 17426596 | |||||
| 書誌レコードID | ||||||
| 収録物識別子タイプ | NCID | |||||
| 収録物識別子 | AA12839617 | |||||
| DOI | ||||||
| 関連タイプ | isIdenticalTo | |||||
| 識別子タイプ | DOI | |||||
| 関連識別子 | 10.1088/1742-6596/454/1/012021 | |||||
| 権利 | ||||||
| 権利情報 | ©2013 The Authors. Content from this work may be used under the terms of theCreative Commons Attribution 3.0 licence. Any further distributionof this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI. | |||||
| 情報源 | ||||||
| 関連名称 | H. Sakakibara, K. Suzuki, H. Usui, K. Kuroki, R. Arita, D.J. Scalapino and H. Aoki. First principles band structure and FLEX approach to the pressure effect on Tc of the cuprate superconductors. Journal of physics. Conference series . 2013, 454(1), 01202 | |||||
| 関連サイト | ||||||
| 識別子タイプ | URI | |||||
| 関連識別子 | https://iopscience.iop.org/article/10.1088/1742-6596/454/1/012021 | |||||
| 関連名称 | https://iopscience.iop.org/article/10.1088/1742-6596/454/1/012021 | |||||
| 著者版フラグ | ||||||
| 出版タイプ | VoR | |||||
