Pressure and temperature dependence of the critical current density in YBa2Cu3O7-δ thin films

S. L. Bud'ko, M. F. Davis, J. C. Wolfe, C. W. Chu, P. H. Hor

研究成果: Article同行評審

16 引文 斯高帕斯(Scopus)

摘要

The transport critical current density (Jc) in c-oriented Y-Ba-Cu-O thin films deposited on LaAlO3 was measured under hydrostatic pressure. We find the relative change of Jc under pressure substantially temperature dependent near Tc, and practically temperature independent for T/Tc<0.8. This behavior is discussed in terms of the empirical equation Jc=Jc0(1-T/Tc*)α, with different factors considered to be important in two temperature regions. The change of Jc under pressure for temperatures close to Tc is dominated by the value of α and pressure derivatives of Tc* and α and the pressure derivatives d(lnJc)/dP are sample dependent; for low temperatures the change of Jc is dominated mainly by pressure dependence of Jc0 and is universal for all samples under study.

原文English
頁(從 - 到)2835-2839
頁數5
期刊Physical Review B
47
發行號5
DOIs
出版狀態Published - 1993

All Science Journal Classification (ASJC) codes

  • 凝聚態物理學

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