MISC

2003年9月25日

磁気顕微鏡による磁束観測

低温工学
  • 鈴木 淳市
  • ,
  • 門脇 和男
  • ,
  • 畑 慶明
  • ,
  • 岡安 悟
  • ,
  • 西尾 太一郎
  • ,
  • 掛谷 一弘
  • ,
  • 小田原 成計
  • ,
  • 永田 篤士
  • ,
  • 中山 哲
  • ,
  • 茅根 一夫

38
9
開始ページ
485
終了ページ
492
記述言語
日本語
掲載種別
DOI
10.2221/jcsj.38.485
出版者・発行元
公益社団法人 低温工学・超電導学会 (旧 社団法人 低温工学協会)

Recently, vortices confined into micro-scale superconductors with shapes like a disk, triangle, square, etc., have attracted much attention because of the quantum phase transition of the self-organized vortex arrangement occurring within such geometrical constraints. Such a transition can be observed using a scanning SQUID microscope with high spatial resolution. We have successfully improved spatial resolution by incorporating a microfabrication technique that reduces both the size of the pick-up coil of the micro DC-SQUID and the standoff distance between the pick-up coil and the sample surface. Using this microscope, we have studied vortex arrangements in micro-scale superconductors made of Nb and YBa2Cu3O7−δ films with various sizes and geometrical shapes. A peculiar oscillating behavior of diamagnetic magnetization corresponding to the particular vortex state was observed.

リンク情報
DOI
https://doi.org/10.2221/jcsj.38.485
CiNii Articles
http://ci.nii.ac.jp/naid/10011371316
CiNii Books
http://ci.nii.ac.jp/ncid/AN00333419
URL
http://id.ndl.go.jp/bib/6698555
ID情報
  • DOI : 10.2221/jcsj.38.485
  • ISSN : 0389-2441
  • CiNii Articles ID : 10011371316
  • CiNii Books ID : AN00333419
  • identifiers.cinii_nr_id : 9000003211921

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