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ID 46732
本文ファイル
著者
Sugimoto, Akira 大学院総合科学研究科 広大研究者総覧
Yamaguchi, Tetsuji
Iguchi, Ienari
キーワード
Scanning SQUID microscope
half vortex
d-Wave pairing symmetry
NDC
物理学
抄録(英)
One of the most important topics in high critical temperature superconductors is the symmetry of order parameter. The most powerful and direct method to show the evidence of d-wave symmetry is the measurement of the half flux quantum at the tricrystal boundary of a superconducting thin film. We present the observation of the half flux quantum in a YBa2Cu3O7−y thin film on a SrTiO3 tricrystal substrate by using a scanning SQUID microscope (SSM). The SSM observation is done from 3 to 90 K. The vortex at the tricrystal point corresponds to Φ0∫2(=1.03×10^-15Wb) and this half vortex is observable up to near the critical temperature. The results indicate the evidence of dx2−y2 symmetry of the superconducting order parameter. Josephson vortices at grain boundaries are also observable and some of them are mobile with increasing the temperature.
内容記述
This work has been supported by Core Research for Evolutional Science and Technology (CREST) of the Japan Science and Technology Corporation (JST).
掲載誌名
Physica C: Superconductivity
367巻
1-4号
開始ページ
28
終了ページ
32
出版年月日
2002-02-15
出版者
Elsevier Science B.V.
ISSN
0921-4534
NCID
出版者DOI
言語
英語
NII資源タイプ
学術雑誌論文
広大資料タイプ
学術雑誌論文
DCMIタイプ
text
フォーマット
application/pdf
著者版フラグ
author
権利情報
Copyright (c) 2002. This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/
This is not the published version. Please cite only the published version. この論文は出版社版でありません。引用の際には出版社版をご確認ご利用ください。
関連情報URL
部局名
総合科学研究科