Critical current control in YBa2Cu3O 7-δ films using artificial pinning centers

Kaname Matsumoto, Tomoya Horide, Ataru Ichinose, Shigeru Horii, Yutaka Yoshida, Masashi Mukaida

研究成果: Contribution to journalArticle査読

117 被引用数 (Scopus)

抄録

High-temperature superconductors can carry high non dissipative currents at low temperatures as long as quantized vortices are pinned. However, the currents in a magnetic field at liquid nitrogen temperature (77 K) are not sufficiently high for practical use due to the weak pinning. For the improvement of nondissipative currents in YBa2Cu3O 7-δ films, linear defects that extended to the c-axis of the film were introduced using a novel nanostructure technology. We observed a marked enhancement of the nondissipative currents even at 77 K and high fields when the fields were applied close to the c-axis. This is a clear demonstration of enhanced pinning using artificially incorporated pinning centers.

本文言語英語
ページ(範囲)L246-L248
ジャーナルJapanese Journal of Applied Physics, Part 2: Letters
44
1-7
DOI
出版ステータス出版済み - 5 3 2005
外部発表はい

All Science Journal Classification (ASJC) codes

  • 工学(全般)
  • 物理学および天文学(その他)
  • 物理学および天文学(全般)

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