Spatially resolved dynamic correlation in the vortex state of high temperature superconductors

被引：84
作者：
López, D [1 ]
Kwok, WK
Safar, H
Olsson, RJ
Petrean, AM
Paulius, L
Crabtree, GW
机构：
[1] Argonne Natl Lab, Div Sci Mat, Argonne, IL 60435 USA
[2] Univ Illinois, Chicago, IL 60607 USA
[3] Western Michigan Univ, Kalamazoo, MI 49008 USA
来源：
PHYSICAL REVIEW LETTERS | 1999年 / 82卷 / 06期
关键词：
D O I：
10.1103/PhysRevLett.82.1277
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
We report transport measurements in the mixed state of YBa2Cu3O7-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. [S0031-9007(98)08260-X].
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页码：1277 / 1280
页数：4
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