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Strong rejuvenation in a chiral-glass superconductor

A. Gardchareon·R. Mathieu·P. E. Jönsson·P. Nordblad
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Abstract

The glassy paramagnetic Meissner phase of a Bi$_2$Sr$_2$CaCu$_2$O$_x$ superconductor ($x$ = 8.18) is investigated by squid magnetometry, using ``dc-memory'' experiments employed earlier to study spin glasses. The temperature dependence of the zero-field-cooled and thermo-remanent magnetization is recorded on re-heating after specific cooling protocols, in which single or multiple halts are performed at constant temperatures. The 'spin' states equilibrated during the halts are retrieved on re-heating. The observed memory and rejuvenation effects are similar to those observed in Heisenberg-like spin glasses.

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A. Gardchareon, R. Mathieu, P. E. Jönsson, P. Nordblad. 2002-09-07. Strong rejuvenation in a chiral-glass superconductor. https://doi.org/10.1103/physrevb.67.052505

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