Unexpected fourfold symmetry in the resistivity of patterned superconductors

Myriam Pannetier; Rinke J. Wijngaarden; Inge Fløan; Jan Rector; Bernard Dam; Ronald Griessen; Peter Lahl; Roger Wördenweber

doi:10.1103/PhysRevB.67.212501

Unexpected fourfold symmetry in the resistivity of patterned superconductors

Myriam Pannetier, Rinke J. Wijngaarden, Inge Fløan, Jan Rector, Bernard Dam, Ronald Griessen, Peter Lahl, and Roger Wördenweber

Phys. Rev. B 67, 212501 – Published 6 June 2003

Abstract

We report the magneto-optical observation of a surprising fourfold symmetry of the flux penetration in a superconducting ${YBa}_{2} {Cu}_{3} O_{7 - δ}$ thin-film disk containing a square array of antidots, leading to an angular variation of the critical current by a factor of nearly 2. This behavior is explained using a vortex channeling model. Potential applications in superconducting devices are discussed

Received 5 March 2003

DOI:https://doi.org/10.1103/PhysRevB.67.212501

Authors & Affiliations

Myriam Pannetier^1,*, Rinke J. Wijngaarden^1,†, Inge Fløan¹, Jan Rector¹, Bernard Dam¹, Ronald Griessen¹, Peter Lahl², and Roger Wördenweber²

¹Division of Physics and Astronomy, Faculty of Sciences, Vrije Universiteit, De Boelelaan 1081, NL-1081 HV Amsterdam, The Netherlands
²Institut für Schichten und Grenzflächen (ISG), Forschungszentrum Jülich, Germany

^*Present address: SPEC-CEA Saclay 91 191 Gif-sur-Yvette Cedex, France.
^†Corresponding author. Electronic address: rw@nat.vu.nl

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Vol. 67, Iss. 21 — 1 June 2003

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Physical Review B

covering condensed matter and materials physics