Spatially Resolved Dynamic Correlation in the Vortex State of High Temperature Superconductors
Daniel López, W. K. Kwok, H. Safar, R. J. Olsson, A. M. Petrean, L. Paulius, G. W. Crabtree
DOI 10.1103/PhysRevLett.82.1277 · Physical Review Letters
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Abstract
We report transport measurements in the mixed state of YBa2Cu3O7−δ 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.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| YBa2Cu3O7-δ Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
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