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ID 46734
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
Current Distribution
Vortex
HTSC
NDC
物理学
抄録(英)
Scanning SQUID Microscope (SSM) is a powerful tool for observing small magnetic flux. It measures the z-component signal of flux density, but it is also available for observation of current distribution by inverting the Biot-Savart law. We report the two dimensional (2D) vector mapping of current distributions in high-TC superconducting YBa2Cu3O7−y (YBCO) thin films obtained by converting magnetic-field data measured by SSM. The current distribution contains those from both transport supercurrent and vortex current. The transport supercurrent is found to flow mainly along the edge of a stripline. The results are in good qualitative agreement with the calculated results based on simple London model. The YBCO films with an artificial grain boundary, i.e. Josephson boundary are also observed. The transport current seems to flows with avoiding the vortices, and an irregular vortex is observed at a point of grain boundary.
掲載誌名
Physica C: Superconductivity
357-360巻
開始ページ
1473
終了ページ
1477
出版年月日
2001-08
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) 2001 Elsevier Science B.V.
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