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ID 34224
FullText URL
Author
Ishizaka, K.
Eguchi, R.
Tsuda, S.
Yokota, T.
Chainani, A.
Kiss, T.
Shimojima, T.
Togashi, T.
Watanabe, S.
Chen, C. T.
Zhang, C. Q.
Takano, Y.
Nagao, M.
Sakuguchi, I.
Takenouchi, T.
Shin, S.
Abstract

<p>We investigate the temperature (T)-dependent low-energy electronic structure of a boron-doped diamond thin film using ultrahigh resolution laser-excited photoemission spectroscopy. We observe a clear shift of the leading edge below T=11 K, indicative of a superconducting gap opening (Delta~0.78 meV at T=4.5 K). The gap feature is significantly broad and a well-defined quasiparticle peak is lacking even at the lowest temperature of measurement (=4.5 K). We discuss our results in terms of disorder effects on the normal state transport and superconductivity in this system.</p>

Note
Digital Object Identifier: 10.1103/PhysRevLett.98.047003
Published with permission from the copyright holder. This is the institute's copy, as published in Physical Review Letters, 23 January 2007, 98, 047003, Pages 1-4.
Publisher URL:http://dx.doi.org/10.1103/PhysRevLett.98.047003
Direct access to Thomson Web of Science record
PACS: 74.62.Dh, 73.61.Cw, 74.90.+n, 79.60.-i
Copyright © 2007 American Physical Society. All rights reserved.
Published Date
2007-1
Publication Title
Physical Review Letters
Start Page
1
End Page
4
Content Type
Journal Article
language
英語
Refereed
True
DOI
Submission Path
light_and_optics/2