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Applied Physics Letters / Volume 94 / Issue 20 / MAGNETISM AND SUPERCONDUCTIVITY

Appl. Phys. Lett. 94, 202501 (2009); http://dx.doi.org/10.1063/1.3139077 (3 pages)

Pattern induced phase transition of vortex motion in high-Tc films

R. Wördenweber1, E. Hollmann1, J. Schubert1, R. Kutzner1, and Ajay Kumar Ghosh1,2

1Institut für Bio-und Nanotechnologie (IBN) and JARA-Fundamentals of Future Information Technology, Forschungszentrum Jülich, D-52425 Jülich, Germany
2Department of Physics, Jadavpur University, Kolkata 700 032, India

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(Received 24 March 2009; accepted 23 April 2009; published online 18 May 2009)

A micropattern induced transition in the mechanism of vortex motion and vortex mobility is demonstrated for high-Tc films. The competition between the anomalous Hall effect and the guidance of vortices by rows of microholes (antidots) leads to a sudden change in the direction of vortex motion that is accompanied by a change of the critical current density and microwave losses. The latter demonstrates the difference in vortex mobility in the different phases of vortex motion in between and within the rows of antidots.

© 2009 American Institute of Physics

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KEYWORDS and PACS

Keywords

critical current density (superconductivity), flux flow, Hall effect, high-temperature superconductors

PACS

  • 74.78.-w

    Superconducting films and low-dimensional structures

  • 72.15.Gd

    Galvanomagnetic and other magnetotransport effects

  • 74.25.Sv

    Critical currents

  • 74.25.Uv

    Vortex phases (includes vortex lattices, vortex liquids, and vortex glasses)

ARTICLE DATA

Digital Object Identifier
http://dx.doi.org/10.1063/1.3139077

PUBLICATION DATA

ISSN

0003-6951 (print)  
1077-3118 (online)

Publisher

$abstract.society.value is a Member of CrossRef American Institute of Physics

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