Role of twin boundaries on the vortex dynamics in YBa$_2$Cu$_3$O$_7$
arXiv:cond-mat/9907282 · doi:10.1103/PhysRevLett.83.1026
Abstract
By means of a novel technique of rotating the applied current we have directly measured the influence of twin boundaries on the vortex motion in a YBa$_2$Cu$_3$O$_7$ single crystal. The results indicate that the effect of twin planes on the vortex dynamics starts to develop below a certain temperature, being responsible for an anisotropic viscosity in the vortex liquid state and a guided motion in the solid state.
4 pages, 4 figures