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Proceedings Paper

Anisotropic enhancement of flux pinning in Y-Ba-Cu-O thin films grown by the step-flow growth mode
Author(s): Hanns-Ulrich Habermeier; T. Haage; Jorg Zegenhagen; V. G. Hadjev; R. Warthmann; Ch. Joob
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Paper Abstract

YBa2Cu3O7-x (YBCO) thin films have been grown on vicinal cut SrTiO3 (001) single crystals. The films show a pronounced anisotropic resistivity and flux pinning properties in the substrate plane. UHV scanning tunneling microscopy and transmission electron microscopy have been used to investigate the substrate surface, film morphology and the growth induced defect structure. The anisotropy is caused by planar defects generated via self-organization of the YBCO which lead to an exceptionally large critical current density up to 8 X 1011 A/m2 at 4.2 K. The films are partially detwinned as a consequence of the modification of the growth mode by the terrace-type surface morphology due to the vicinal cut of the substrates.

Paper Details

Date Published: 22 December 1998
PDF: 10 pages
Proc. SPIE 3481, Superconducting and Related Oxides: Physics and Nanoengineering III, (22 December 1998); doi: 10.1117/12.335877
Show Author Affiliations
Hanns-Ulrich Habermeier, Max-Planck-Institut fuer Festkoerperforschung (Germany)
T. Haage, Max-Planck-Institut fuer Festkoerperforschung (Germany)
Jorg Zegenhagen, Max-Planck-Institut fuer Festkoerperforschung (Germany)
V. G. Hadjev, Max-Planck-Institut fuer Festkorperforschung (Germany)
R. Warthmann, Max-Planck-Institut fuer Metallforschung (Germany)
Ch. Joob, Max-Planck-Institut fuer Metallforschung (Germany)

Published in SPIE Proceedings Vol. 3481:
Superconducting and Related Oxides: Physics and Nanoengineering III
Davor Pavuna; Ivan Bozovic, Editor(s)

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