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

Journal Article · Sun Mar 01 00:00:00 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]

---

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-31-109-ENG-38
• OSTI ID: 597241
• Journal Information: Physical Review Letters, Vol. 80, Issue 12; Other Information: PBD: Mar 1998
• Country of Publication: United States
• Language: English

Related Subjects

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