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

Journal Article · Sun Mar 01 04:00:00 EST 1998 · Physical Review Letters

DOI:https://doi.org/10.1103/PhysRevLett.80.2693· OSTI ID:597241

Sow, C; Grier, D G ^[1]; Harada, K; Tonomura, A ^[2]; Crabtree, G ^[3]

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1. The James Franck Institute and Department of Physics, The University of Chicago, Chicago, Illinois 60637 (United States)
2. Advanced Research Laboratory, Hitachi, Ltd., Hatoyama (Japan)
3. Argonne National Laboratory, Argonne, Illinois 60439 (United States)

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{close_quote} 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. {copyright} {ital 1998} {ital The American Physical Society}

• DOE Contract Number: W-31109-ENG-38
• OSTI ID: 597241
• Journal Information: Physical Review Letters, Journal Name: Physical Review Letters Journal Issue: 12 Vol. 80; ISSN 0031-9007; ISSN PRLTAO
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
ABRIKOSOV THEORY
FLUX QUANTIZATION
LORENTZ FORCE
MAGNETIC FLUX
MICROSCOPY
NIOBIUM
SUPERCONDUCTING FILMS
TYPE-II SUPERCONDUCTORS
VORTICES