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Measurement of the Vortex Pair Interaction Potential in a Type-II Superconductor
Phys. Rev. Lett. 80, 2693 – Published 23 March, 1998
DOI: https://doi.org/10.1103/PhysRevLett.80.2693
Abstract
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.
See Also
A Peek at the Superconducting “Pinscape”
Phys. Rev. Focus 1, 1 (1998)
References (15)
- K. Harada et al., Nature (London) 360, 51 (1992).
- A. Tonomura, Electron Holography, Springer Series in Optical Sciences Vol. 70 (Springer-Verlag, New York, 1993).
- K. Harada et al., Science 274, 1167 (1996).
- T. Matsuda et al., Science 271, 1393 (1996).
- J. C. Crocker and D. G. Grier, J. Colloid Interface Sci. 179, 298 (1996).
- F. P. Preparata and M. I. Shamos, Computational Geometry (Springer-Verlag, New York, 1985).
- D. R. Nelson and B. I. Halperin, Phys. Rev. B 19, 2457 (1979).
- J.-P. Hansen and I. R. McDonald, Theory of Simple Liquids (Academic, London, 1986), 2nd ed.
- K.-C. Ng, J. Chem. Phys. 61, 2680 (1974).
- M. Mungan, C.-H. Sow, S. N. Coppersmith, and D. G. Grier (to be published).
- The Clem model for vortex interactions [J. R. Clem, J. Low Temp. Phys. 18, 427 (1975)] is more appropriate for Nb, whose superconducting coherence length is comparable to its London penetration depth. The present data set does not offer sufficient resolution to distinguish its predictions from those of the London model, however, and we present the simpler and quantitatively adequate model for clarity.
- R. Meservey and B. B. Schwartz, in Superconductivity, R. D. Parks (Marcel Dekker, New York, 1969), pp. 117–191.
- G. S. Park, C. E. Cunningham, B. Cabrerra, and M. E. Huber, Phys. Rev. Lett. 68, 1920 (1992).
- G. Blatter and V. Geshkenbein, Phys. Rev. Lett. 77, 4958 (1996); S. Mukherji and T. Nattermann, 79, 139 (1997).
- C. A. Bolle et al., Phys. Rev. Lett. 66, 112 (1991); L. L. Daemen et al., 70, 2948 (1993); M. M. Doria and I. G. de Oliveira, Phys. Rev. B 49, 6205 (1994); I. V. Grigorieva et al., 51, 3765 (1995).