Geometrical confinement effect in layered mesoscopic vortex matter

N. R. CEJAS BOLECEK; M. I. DOLZ; A. KOLTON; H. PASTORIZA; C. J. VAN DER BEEK; M. KNOCZKYKOWSKI; M. MENGHINI; G. NIEVA; Y. FASANO

Bariloche

Conferencia; Poster presentation en la conferencia Advanced Topics in Magnetism and Superconductivity (ATOMS 2014); 2014

Depto Materia Condensada, Gerencia Física, CAB

We studied the effect of geometrical effects in the solidification of mesoscopic vortex matter nucleated in micron-sized $Bi_{2}Sr_{2}CaCu_{2}O_{8 +\delta}$  samples with sizes ranging 10 to 100 mm and 2 mm height.  We study the effect of square and circular geometrical confinement for the mesoscopic solid phase with a low surface-to-volume ratio of vortices.  We characterize the structural properties of systems with less than 1000 vortices with single-vortex resolution by means of magnetic decoration experiments.  We study the positional and orientational deformation of this mesoscopic vortex matter due to the proliferation of topological disorder induced by edge-effects.