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

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

Research output: Contribution to journalArticlepeer-review

124 Citations (Scopus)


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.

Original languageEnglish
Pages (from-to)L246-L248
JournalJapanese Journal of Applied Physics, Part 2: Letters
Issue number1-7
Publication statusPublished - May 3 2005
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • General Engineering
  • Physics and Astronomy (miscellaneous)
  • General Physics and Astronomy


Dive into the research topics of 'Critical current control in YBa2Cu3O 7-δ films using artificial pinning centers'. Together they form a unique fingerprint.

Cite this