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ID 48727
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Author
Baba, T
Tsuda, S
Watanabe, T
Nohara, M
Takagi, H
Oguchi, T
Shin, S
Abstract
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.
Published Date
2010-05-17
Publication Title
Physical Review B
Volume
volume81
Issue
issue18
Publisher
The American Physical Society
Start Page
180509-1
End Page
180509-4
ISSN
1098-0121
Content Type
Journal Article
Project
Research Center of New Functional Materials for Energy Production, Storage, and Transport
Official Url
http://link.aps.org/doi/10.1103/PhysRevB.81.180509
language
英語
Copyright Holders
© 2010 The American Physical Society
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publisher
Refereed
True
DOI
Web of Sience KeyUT