INVESTIGADORES
KAUL Enrique Eduardo
artículos
Título:
Order-disorder transition and the zero-dimensional vortex pinning regime in Bi2Sr2CaCu2O8+d
Autor/es:
V. F. CORREA; J. A. HERBSOMMER; E. E. KAUL; F. DE LA CRUZ; G. L. NIEVA
Revista:
PHYSICAL REVIEW B - CONDENSED MATTER AND MATERIALS PHYSICS
Editorial:
The American Physical Society
Referencias:
Año: 2001 vol. 63 p. 925021 - 925024
ISSN:
0163-1829
Resumen:
We make a comparative study between the ab
planes dc critical current and the ac transverse magnetic permeability μ^ in the Campbell limit for optimally doped and
overdoped Bi2Sr2CaCu2O8+d samples. We focus attention on the
low-temperature region [T/Tc(0),0.25], where the transition to
the zero-dimensional Larkin limit is detected by the critical current as well
as by a rapid change of the Labusch parameter with temperature. The
order-disorder transition, characterized by the second peak in magnetization, disappears
in the presence of this zero-dimensional pinning regime.
