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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/7036
3dc7a344-7c6a-4374-94a5-681f81c156e9
名前 / ファイル ライセンス アクション
jpcs454(1)_012021.pdf jpcs454(1)_012021.pdf (799.2 kB)
Item type 会議発表論文 / Conference Paper(1)
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

WEKO 4724
e-Rad 20734354
研究者総覧鳥取大学 100001618

en Sakakibara, Hirofumi

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Suzuki, Katsuhiro

× Suzuki, Katsuhiro

WEKO 26101

en Suzuki, Katsuhiro

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Usui, Hidetomo

× Usui, Hidetomo

WEKO 26102

en Usui, Hidetomo

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Kuroki, Kazuhiko

× Kuroki, Kazuhiko

WEKO 26103

en Kuroki, Kazuhiko

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Arita, Ryotaro

× Arita, Ryotaro

WEKO 26104

en Arita, Ryotaro

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Scalapino, Douglas J.

× Scalapino, Douglas J.

WEKO 26105

en Scalapino, Douglas J.

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Aoki, Hideo

× Aoki, Hideo

WEKO 26106

en 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
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
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