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ID 48727
フルテキストURL
著者
Baba, T Institute for Solid State Physics, University of Tokyo
Yokoya, T The Graduate School of Natural Science and Technology, Okayama University
Tsuda, S Institute for Solid State Physics, University of Tokyo
Watanabe, T Institute for Solid State Physics, University of Tokyo
Nohara, M Department of Advanced Materials Science, University of Tokyo
Takagi, H Department of Advanced Materials Science, University of Tokyo
Oguchi, T Department of Quantum Matter, Graduate school of Advanced Sciences of Matter (ADSM), Hiroshima University
Shin, S Institute for Solid State Physics, University of Tokyo
抄録
We have performed ultrahigh-resolution angle-resolved photoemission spectroscopy to directly study the large superconducting (SC) gap anisotropy of YNi2B2C. We succeed in measuring momentum (k) dependence of SC gap for individual Fermi surface (FS) sheets, which demonstrates complexity of SC gap in a phonon-mediated superconductor. Within measured k regions on FS sheets, we find a pointlike minimum of SC gap, whose k positions can be connected by the known nesting vector. This shows close correlation between the nesting vector and node formation.
発行日
2010-05-17
出版物タイトル
Physical Review B
81巻
18号
出版者
The American Physical Society
開始ページ
180509-1
終了ページ
180509-4
ISSN
1098-0121
資料タイプ
学術雑誌論文
プロジェクト
エネルギー環境新素材拠点
オフィシャル URL
http://link.aps.org/doi/10.1103/PhysRevB.81.180509
言語
English
OAI-PMH Set
岡山大学
著作権者
© 2010 The American Physical Society
論文のバージョン
publisher
査読
有り
DOI
Web of Sience KeyUT