INVESTIGADORES
PASTORIZA Hernan
artículos
Título:
Anisotropic vortex dynamics in twined YBaCuO single crystals
Autor/es:
H. PASTORIZA; S. CANDIA; G. NIEVA
Revista:
PHYSICA B - CONDENSED MATTER
Referencias:
Año: 2000 vol. 284 p. 763 - 764
ISSN:
0921-4526
Resumen:
Rotating continuously the applied vortex force and measuring the vortexvelocity vector, we were able to directly determine the role of twinboundaries in the vortex dynamics in YBa$_2$Cu$_3$O$_7$ single crystalswith unidirectional twins. We show the different effect of thesecorrelated pinning defects into the various vortex phases. In theentangled vortex liquid state, we observe a linear response but with ananisotropic viscosity. On the other hand, ananomalous guided motion by twin planes is found in the vortex solid.
