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Author Lopez, D. ♦ Kwok, W. K. ♦ Olsson, R. J. ♦ Crabtree, G. W. ♦ Safar, H. ♦ Petrean, A. M. ♦ Paulius, L.
Source United States Department of Energy Office of Scientific and Technical Information
Content type Text
Language English
Subject Keyword MATERIALS SCIENCE ♦ PHYSICS ♦ HIGH-TC SUPERCONDUCTORS ♦ BARIUM OXIDES ♦ YTTRIUM OXIDES ♦ COPPER OXIDES ♦ VORTICES ♦ MAGNETIC FLUX ♦ LORENTZ FORCE ♦ SHEAR ♦ PLASTICITY
Abstract 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}
ISSN 00319007
Educational Use Research
Learning Resource Type Article
Publisher Date 1999-02-01
Publisher Place United States
Journal Physical Review Letters
Volume Number 82
Issue Number 6


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