Spatially Resolved Dynamic Correlation in the Vortex State of High Temperature Superconductors
Journal Article
·
· Physical Review Letters
- Argonne National Laboratory, Materials Science Division, Argonne, Illinois 60435 (United States)
- University of Illinois at Chicago, Chicago, Illinois 60607 (United States)
- Western Michigan University, Kalamazoo, Michigan 49008 (United States)
We report transport measurements in the mixed state of YBa{sub 2}Cu {sub 3}O{sub 7{minus}{delta}} single crystals using a contact geometry which enables control of the gradient of the Lorentz force acting on the vortices. The spatial dependence of the vortex velocity profile in the liquid and solid vortex phases is resolved providing information about the transverse dynamic correlation of vortices. While in the liquid phase the vortices respond locally to the driving force, in the solid regime they show long range velocity correlation over macroscopic distances. At high driving force gradients, vortex-vortex shear stresses exceed the elastic limit and the dynamics is characterized by plastic motion. {copyright} {ital 1999} {ital The American Physical Society}
- DOE Contract Number:
- W-31109-ENG-38
- OSTI ID:
- 304274
- Journal Information:
- Physical Review Letters, Journal Name: Physical Review Letters Journal Issue: 6 Vol. 82; ISSN 0031-9007; ISSN PRLTAO
- Country of Publication:
- United States
- Language:
- English
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