Relaxation under Supercooling of the Disordered Vortex State in Doped CeRu2 Alloy

TL;DR

This paper investigates magnetisation relaxation in a doped CeRu2 alloy's disordered vortex state, revealing metastable states created by supercooling and field perturbations, with explanations based on standard theory.

Contribution

It presents the first detailed study of relaxation phenomena in supercooled vortex states of doped CeRu2 alloys, highlighting the effects of supercooling and field jerks.

Findings

Metastable vortex states are created by supercooling.

Magnetisation relaxation depends on supercooling extent.

Standard theory offers a plausible explanation.

Abstract

Relaxation in magnetisation of metastable states is reported. The states are prepared by supercooling a Ce(Ru, 5% Nd)2 alloy sample to different extents through similar paths in the H-T space, and then by applying a field jerk of 20 Oe of either sign. Based on standard theory, a possible explanation is put forward.