Low temperature fluxline relaxation effects in YBa2Cu3O7-δ thin films

J. Lensink, C.F.J. Flipse, K. Heeck, R. Griessen, B. Dam

Research output: Contribution to journalArticleAcademicpeer-review

Abstract

We have investigated magnetic flux relaxation at low temperatures in a 90 nm epitaxial coevaporated film on YBa2Cu3O7-δ superconductor. This film is characterized by a high critical current Jc of 3.5 × 1011 A m-2 at 4.2 K, and 1.3 × 1010 A m-2 at 77 K. Although Jc depends strongly on the applied magnetic field B the magnetic relaxation is only weakly dependent on B. Also the magnetic relaxation does not vanish at zero temperature, indicating that besides a thermally activated process there is another intrinsic process working.

Original languageEnglish
Pages (from-to)862-863
Number of pages2
JournalVacuum
Volume41
Issue number4-6
DOIs
Publication statusPublished - 1990
Externally publishedYes

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