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著者
Sakakibara, H. Department of Engineering Science, The University of Electro-Communications 鳥取大学研究者総覧 KAKEN研究者をさがす
Suzuki, K. Department of Applied Physics, The University of Tokyo
Usui, H. Department of Engineering Science, The University of Electro-Communications
Kuroki, K. Department of Engineering Science, The University of Electro-Communications
Arita, R. Department of Applied Physics, The University of Tokyo / JST, PRESTO
Scalapino, D.J. Physics Department, University of California
Aoki, H. Department of Physics, The University of Tokyo
キーワード
cuprates
superconductivity
two-orbital model
band calculation
flucutuation exchange approximation(FLEX)
spin fluctuation
抄録
Our recent study has revealed that the mixture of the dz2 orbital component into the Fermi surface suppresses Tc in the cuprates such as La2CuO4. We have also shown that applying hydrostatic pressure enhances Tc due to smaller mixing of the Cu4s component. We call these the “orbital distillation” effect. In our previous study, the 4s orbital was taken into account through the hoppings in the dx2-y2 sector, but here we consider a model in which of the dx2-y2, dz2 and 4s orbitals are all considered explicitly. The present study reinforces our conclusion that smaller 4s hybridization further enhances Tc.
出版者
Elsevier B.V.
資料タイプ
会議資料
外部リンク
ISSN・ISBN
18753892
掲載誌名
Physics Procedia
45
開始ページ
13
終了ページ
16
発行日
2013
出版者DOI
著者版フラグ
出版社版
著作権表記
© 2013 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/3.0/)
掲載情報
H. Sakakibara, K. Suzuki, H. Usui, K. Kuroki, R. Arita, D.J. Scalapino and H. Aoki. Three-orbital study on the orbital distillation effect in the high Tc cuprates. Physics Procedia. 2013, 45, 13-16. 25th International Symposium on Superconductivity(ISS 2012)
部局名
工学部・工学研究科
言語
英語