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ID 34224
フルテキストURL
著者
Ishizaka, K. University of Tokyo
Eguchi, R. The Institute of Physical and Chemical Research (RIKEN)
Tsuda, S. University of Tokyo
Yokota, T. Okayama University
Chainani, A. The Institute of Physical and Chemical Research (RIKEN)
Kiss, T. The Institute of Physical and Chemical Research (RIKEN)
Shimojima, T. University of Tokyo
Togashi, T. The Institute of Physical and Chemical Research (RIKEN)
Watanabe, S. University of Tokyo
Chen, C. T. Chinese Academy of Science
Zhang, C. Q. Chinese Academy of Science
Takano, Y. National Institute for Materials Science
Nagao, M. National Institute for Materials Science
Sakuguchi, I. National Institute for Materials Science
Takenouchi, T. Waseda University
Shin, S. University of Tokyo
抄録

<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>

備考
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.
発行日
2007-1
出版物タイトル
Physical Review Letters
開始ページ
1
終了ページ
4
資料タイプ
学術雑誌論文
言語
English
査読
有り
DOI
Submission Path
light_and_optics/2