Vortex Bose glass in ErBa2Cu3Oy films with size-controlled nanorods

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

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Abstract

Anomalous changes in irreversibility lines (ILs) and critical current properties depending on growth conditions were demonstrated in ErBa 2Cu3Oy films with Ba-(Nb,Er)-O nanorods. Despite the formation of nanorods in the matrix at all growth temperatures (Ts), Bose-glass-like vortex pinning was strengthened with decreasing Ts. In particular, the behavior of ILs can be understood in terms of the morphology of introduced nanorods, and Ts strongly affects the vortex states. Our present study suggests the importance of optimization of growth conditions in the production process of rare-earth-based coated conductors containing nanorods as vortex-pinning centers.

Original languageEnglish
Article number152506
JournalApplied Physics Letters
Volume93
Issue number15
DOIs
Publication statusPublished - Oct 24 2008

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All Science Journal Classification (ASJC) codes

  • Physics and Astronomy (miscellaneous)

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