INVESTIGADORES
FASANO Yanina
artículos
Título:
Doping-dependence of the Vortex Phase Diagram of Bi2Sr2Ca2Cu3O10 + d
Autor/es:
A. PIRIOU; YANINA FASANO; E. GIANNINI; /O. FISCHER
Revista:
PHYSICA C - SUPERCONDUTIVITY
Referencias:
Año: 2007 vol. 460 p. 408 - 409
ISSN:
0921-4534
Resumen:
We study the effect of oxygen overdoping in the vortex phase diagram of Bi2Sr2Ca2Cu3O10+ä single crystals. In the overdoped regime we do find a smooth variation of Tc with the annealing pressure, indicating that Bi2Sr2Ca2Cu3O10+ä is less sensitive to oxygen-doping than the bilayer Bi2Sr2CaCu2O8+ä compound. Magnetic measurements reveal that oxygen overdoping produces a reduction of the liquid vortex region and increases the second-peak transition field. These findings imply that the coupling between CuO2 planes increases upon overdoping. We find that this anisotropy decrease is steeper in Bi2Sr2Ca2Cu3O10+ä than in Bi2Sr2CaCu2O8+ä for the same doping level.
