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 journalArticle

114 Citations (Scopus)

Abstract

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
JournalJapanese Journal of Applied Physics, Part 2: Letters
Volume44
Issue number1-7
DOIs
Publication statusPublished - May 3 2005
Externally publishedYes

Fingerprint

Critical currents
Electric current control
critical current
High temperature superconductors
Liquid nitrogen
Nanostructures
Vortex flow
Demonstrations
Magnetic fields
Temperature
Defects
liquid nitrogen
high temperature superconductors
vortices
augmentation
defects
magnetic fields
temperature

All Science Journal Classification (ASJC) codes

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

Cite this

Critical current control in YBa2Cu3O 7-δ films using artificial pinning centers. / Matsumoto, Kaname; Horide, Tomoya; Ichinose, Ataru; Horii, Shigeru; Yoshida, Yutaka; Mukaida, Masashi.

In: Japanese Journal of Applied Physics, Part 2: Letters, Vol. 44, No. 1-7, 03.05.2005.

Research output: Contribution to journalArticle

Matsumoto, Kaname ; Horide, Tomoya ; Ichinose, Ataru ; Horii, Shigeru ; Yoshida, Yutaka ; Mukaida, Masashi. / Critical current control in YBa2Cu3O 7-δ films using artificial pinning centers. In: Japanese Journal of Applied Physics, Part 2: Letters. 2005 ; Vol. 44, No. 1-7.
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