Low temperature fluxline relaxation effects in YBa2Cu3O7−δ thin films

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Low temperature fluxline relaxation effects in YBa2Cu3O7−δ thin films

Journal Article (1990)

Author(s)

J. Lensink (Vrije Universiteit Amsterdam)

C. F.J. Flipse (Vrije Universiteit Amsterdam)

K. Heeck (Vrije Universiteit Amsterdam)

R. Griessen (Vrije Universiteit Amsterdam)

B. Dam (Philips Research Laboratories)

Affiliation

External organisation

DOI related publication

https://doi.org/10.1016/0042-207X(90)93805-S Final published version

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https://resolver.tudelft.nl/uuid:c4a70876-315b-41c9-b694-a4fb1b8c1660

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Publication Year

1990

Language

English

Affiliation

External organisation

Journal title

Vacuum

Issue number

4-6

Volume number

41

Pages (from-to)

862-863

Downloads counter

73

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 × 1011Am−2 at 4.2 K, and 1.3 × 1010Am−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.