Measurement of the vortex pair interaction potential in a type-ii superconductor

Chorng Haur Sow, Ken Harada, Akira Tonomura, George Crabtree, David G. Grier

    Research output: Contribution to journalArticlepeer-review


    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.

    Original languageEnglish (US)
    Pages (from-to)2693-2696
    Number of pages4
    JournalPhysical Review Letters
    Issue number12
    StatePublished - 1998

    ASJC Scopus subject areas

    • General Physics and Astronomy


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