M. Marezio, D.E. Cox, et al.
Solid State Communications
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.
M. Marezio, D.E. Cox, et al.
Solid State Communications
P. Guéret, C. Rossel, et al.
Journal of Applied Physics
D. Bozyigit, C. Rossel
DRC 2009
K. Verbist, O. Milat, et al.
Physical Review B - CMMP