INVESTIGADORES
NIEVA Gladys Leonor
artículos
Título:
Anisotropic vortex dynamics in twined YBaCuO single crystals
Autor/es:
PASTORIZA, H.; CANDIA, S.; NIEVA, G.
Revista:
PHYSICA B - CONDENSED MATTER
Editorial:
ELSEVIER SCIENCE BV
Referencias:
Año: 2000 vol. 284 p. 763 - 764
ISSN:
0921-4526
Resumen:
Rotating continuously the applied vortex force and measuring the vortex velocity vector, we were able to directly determine the role of twin boundaries in the vortex dynamics in YBa2Cu3Ï7 single crystals with unidirectional twins. We show the different effect of these correlated pinning defects into the various vortex phases. In the entangled vortex liquid state, we observe a linear response but with an anisotropic viscosity. On the other hand, an anomalous guided motion by twin planes is found in the vortex solid.
