Thickness dependence of the magnetic properties in YBa2Cu3O7-δ thin films

R. Prozorov, E. Sheriff, Y. Yeshurun, A. Shaulov

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Abstract

We report on magnetization measurements in laser ablated YBa2Cu3O7-δ films with thickness 800 - 3000 Å. The persistent current density j and the magnetic relaxation rate decrease with increase of the thickness. At certain conditions this leads to a crossing of the relaxation curves measured in films of different thickness. These results are explained considering surface effects which cause a non-homogeneous distribution of j along the film thickness.

Original languageEnglish
Pages (from-to)2215-2216
Number of pages2
JournalPhysica C: Superconductivity and its Applications
Volume282
Issue numberPART 4
DOIs
StatePublished - Aug 1997

Bibliographical note

Funding Information:
Acknowledgments: We are grateful to E. Sonin and V. Vinokur for useful discussions. This work was partially supported by The Israeli Science Foundations and the Heinrich Hertz Minerva Center for high - temperature superconductivity. Y. Y. acknowledges support from USA-Israel Binational Science Foundation. R. P. acknowledges support from the Clore Foundations.

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