Anisotropic characteristics of in-plane aligned a-axis YBa2Cu3O7-δ thin films

Chih-Wei Luo, M. H. Chen, C. C. Chiu, Kaung-Hsiung Wu, Jenh-Yih Juang, T. M. Uen, Jiunn-Yuan Lin, Y. S. Gou

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Abstract

Highly in-plane aligned a-axis oriented YBa2 Cu3 O7-δ (YBCO) thin films with unprecedented transition temperature (Tc ∼ 91.3 K) have been deposited on (100) LaSrGaO4 substrates using a continuously grown PrBa2 Cu3 O7-δ (PBCO) template layer by pulsed laser. The anisotropies between b- and c-axis were investigated by transport measurements and atomic force microscopy (AFM . Although, the onset Tc's along b- and c-axis appeared approximately the same, a significant filing was observed in the resistive transition along c-axis. The temperature-dependent of the tailing effect, however, cannot be explained by thermally activated phase-slippage (TAPS) commonly encountered in grain-boundary weak links.

Original languageEnglish
Pages (from-to)545-550
Number of pages6
JournalJournal of Low Temperature Physics
Volume131
Issue number3-4
DOIs
StatePublished - 1 May 2003

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