H. Schwer, E. Kaldis, et al.
Journal of Solid State Chemistry
We report on memory effects observed in the time dependence of the magnetization M(T, H) of a superconducting Y-Ba-Cu-O single crystal. As in spin-glasses, the decay rate S=dMdlnt is not uniquely determined. It exhibits a characteristic change at time t equal to the waiting time tw during which the specimen was kept at a given temperature T<Tc and magnetic field H before a field perturbation H is applied at time t=0. This phenomenon, seen for the first time in a superconductor, reveals the glassy nature of the superconducting state in the high-Tc oxides. © 1989 The American Physical Society.
H. Schwer, E. Kaldis, et al.
Journal of Solid State Chemistry
H. Schwer, J. Karpinski, et al.
Physica C: Superconductivity and its applications
P. Svedlindh, K. Niskanen, et al.
Physical Review B
C. Marchiori, D.J. Webb, et al.
Journal of Applied Physics