Magneto-optical investigation of flux penetration in a superconducting ring

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Magneto-optical investigation of flux penetration in a superconducting ring

Journal Article (2001)

Author(s)

Myriam Pannetier (Vrije Universiteit Amsterdam)

F. C. Klaassen (Vrije Universiteit Amsterdam)

R. J. Wijngaarden (Vrije Universiteit Amsterdam)

M. Welling (Vrije Universiteit Amsterdam)

K. Heeck (Vrije Universiteit Amsterdam)

J. M. Huijbregtse (Vrije Universiteit Amsterdam)

B. Dam (Vrije Universiteit Amsterdam)

R. Griessen (Vrije Universiteit Amsterdam)

Affiliation

External organisation

DOI related publication

https://doi.org/10.1103/PhysRevB.64.144505

To reference this document use:

https://resolver.tudelft.nl/uuid:7e9cf9b1-491a-4c59-a933-3636e5498bd3

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Publication Year

2001

Language

English

Affiliation

External organisation

Issue number

14

Volume number

64

Abstract

Using advanced magneto-optics, the field and current distributions in superconducting thin film YBa2⁢Cu3⁢O7 rings in an externally applied magnetic field are studied experimentally. The observations are in close agreement with numerical calculations. During the initial flux penetration and field reversal a highly nonuniform current distribution is observed. In particular, concentric counterrotating current loops occur during field reversal. We explore implications of these results for the determination of critical currents and penetration fields from bulk magnetization measurements.

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