Phys. Rev. Lett. 80, 2693–2696 (1998)

Measurement of the Vortex Pair Interaction Potential in a Type-II Superconductor

Abstract

References

Citing Articles (12)

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Chorng-Haur Sow¹, Ken Harada², Akira Tonomura², George Crabtree³, and David G. Grier¹
¹The James Franck Institute and Department of Physics, The University of Chicago, Chicago, Illinois 60637
²Advanced Research Laboratory, Hitachi, Ltd., Hatoyama, Japan
³Argonne National Laboratory, Argonne, Illinois 60439

Received 27 June 1997; revised 18 December 1997; published in the issue dated 23 March 1998

See accompanying Physics Focus

We describe the first direct measurement of the pair interaction potential for magnetic flux lines in a type-II superconductor. Our approach relies on a quantitative analysis of Lorentz microscope images of vortices creeping through a superconducting thin film. Time-resolved vortex distributions imaged in this way reflect both the vortices' mutual interaction and also the influence of random pinning forces. These influences are isolated and quantified by adapting results from the theory of simple liquids.

URL:

http://link.aps.org/doi/10.1103/PhysRevLett.80.2693

DOI:

10.1103/PhysRevLett.80.2693

PACS:

74.60.Ec, 74.60.Ge

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Phys. Rev. Lett. 80, 2693–2696 (1998)

Measurement of the Vortex Pair Interaction Potential in a Type-II Superconductor