ID 6496
File
Authors
Sakakibara, Hirofumi Department of Engineering Science, The University of Electro-Communications Researchers DB KAKEN
Suzuki, Katsuhiro Department of Engineering Science, The University of Electro-Communications
Usui, Hidetomo Department of Physics, Osaka University
Miyao, Satoaki Department of Materials Engineering Science, Osaka University
Maruyama, Isao Department of Information and Systems Engineering, Fukuoka Institute of Technology
Kusakabe, Koichi Department of Materials Engineering Science, Osaka University
Arita, Ryotaro Department of Applied Physics, The University of Tokyo / JST, TRIP / JST, CREST
Aoki, Hideo Department of Physics, The University of Tokyo
Kuroki, Kazuhiko Department of Physics, Osaka University
Abstract
By constructing dx2-y2-dz2 two-orbital models from first principles, we have obtained a systematic correlation between the Fermi surface warping and theoretically evaluated Tc for various bilayer as well as single-layer cuprates. This reveals that a smaller mixture of the dz2 orbital component on the Fermi surface leads simultaneously to larger Fermi-surface warping and higher Tc. The theoretical correlation strikingly resembles a systematic plot for the experimentally observed Tc against the Fermi surface warping due to Pavarini et al. [Phys. Rev. Lett. 87, 047003 (2001)], and the present result unambiguously indicates that the dz2 mixture is one key factor that determines Tc in the cuprates.
Publisher
American Physical Society
Content Type
Journal Article
Link
ISSN
24699950
NCID
AA11187113
Journal Title
Physical review. Third series. B, Condensed matter and materials physics
Volume
89
Start Page
224505
Published Date
2014-06-09
Publisher-DOI
Text Version
Publisher
Rights
©2014 American Physical Society
Citation
H. Sakakibara, K. Suzuki, H. Usui, S. Miyao, I. Maruyama, K. Kusakabe, R. Arita, H. Aoki and K. Kuroki. Orbital mixture effect on the Fermi surface-Tc correlation in the cuprate superconductors --- bilayer vs single layer. Physical review. Third series. B, Condensed matter and materials physics. 2014, 89, 224505
Department
Faculty of Engineering/Graduate School of Engineering
Language
English