Memory Effects in a Superconducting Y-Ba-Cu-O Single Crystal: A Similarity to Spin-Glasses

DOI to cite this document:: 10.5283/epub.16091

Rossel, C. ; Maeno, Y. ; Morgenstern, Ingo

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Date of publication of this fulltext: 09 Aug 2010 12:00

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Abstract

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=dM/dlnt 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 ΔH ...