Two-dimensional vortex-pinning phenomena in y Ba2 Cu3 Oy films

S. Horii, M. Takamura, M. Mukaida, A. Ichinose, K. Yamada, R. Teranishi, K. Matsumoto, R. Kita, Y. Yoshida, J. Shimoyama, K. Kishio

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Anomalous superconducting properties were demonstrated in anisotropic high-critical-temperature superconductors (HTSCs) by simultaneously introducing two different planar types of vortex-pinning centers. The nanostructure, magnetic field, and field-angle dependency of critical current properties for an a -axis-grown multilayered film consisting of superconducting and semiconducting layers were characterized. Semiconductive layers running perpendicular to Cu O2 superconducting layers behave as novel two-dimensional vortex-pinning centers that reverse the typical magnetic response in the superconducting state observed for conventional HTSCs. The results indicate that the vortex behavior in nanostructured HTSCs can be controlled; therefore, significant potential exists for further improvement of the critical current properties.

Original languageEnglish
Article number132502
JournalApplied Physics Letters
Issue number13
Publication statusPublished - Apr 10 2008

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy (miscellaneous)

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    Horii, S., Takamura, M., Mukaida, M., Ichinose, A., Yamada, K., Teranishi, R., Matsumoto, K., Kita, R., Yoshida, Y., Shimoyama, J., & Kishio, K. (2008). Two-dimensional vortex-pinning phenomena in y Ba2 Cu3 Oy films. Applied Physics Letters, 92(13), [132502].