Critical currents and micro-structure in YBa2Cu3O7-δ thin films

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Critical currents and micro-structure in YBa2Cu3O7-δ thin films

Journal Article (1996)

Author(s)

J. C. Martíneza (Vrije Universiteit Amsterdam, University of Mainz)

B. Stäuble-Pümpin (Vrije Universiteit Amsterdam)

G. Doornbos (Vrije Universiteit Amsterdam)

R. Surdeanu (Vrije Universiteit Amsterdam)

B. Dam (Vrije Universiteit Amsterdam)

U. Poppe (Forschungszentrum Jülich)

R. Griessen (Vrije Universiteit Amsterdam)

Affiliation

External organisation

DOI related publication

https://doi.org/10.1007/BF02562768 Final published version

To reference this document use

https://resolver.tudelft.nl/uuid:68539997-2d99-4cfc-9284-ff627ef2482a

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Publication Year

1996

Language

English

Affiliation

External organisation

Journal title

Czechoslovak Journal of Physics

Volume number

46

Pages (from-to)

1307-1308

Downloads counter

82

Abstract

In an attempt to clarify the origin of the large critical current densitiesJ c observed in Laser Ablated and Sputtered YBa2Cu3O7−δ (YBCO) thin films, we make a systematic study of the low temperatureJ c in samples carefully analysed using STM and AFM.J c (B) is determined from torque-magnetometry performed in ring-patterned thin films. Epitaxial YBCO films nucleate in c-axis oriented single-crystalline islands with sizes ranging between 200 and 700 nm. We show thatJ c can be mainly explained by vortex pinning localised in the island boundaries.