Magnetization Decay due to Vortex Phase Boundary Motion in BSCCO

TL;DR

This paper investigates a new magnetization decay regime in BSCCO crystals near the second peak field, where the decay is governed by slow vortex phase boundary motion, revealing insights into vortex dynamics.

Contribution

It introduces a novel decay regime of magnetization linked to vortex phase boundary motion in BSCCO, near the second peak field.

Findings

Decay controlled by slow phase boundary propagation

Identification of a new magnetization decay regime

Insights into vortex phase dynamics in high-temperature superconductors

Abstract

We identify a new regime of decay of the irreversible magnetization in clean Bi$_{2}$Sr$_{2}$CaCu$_{2}$O$_{8}$ crystals, at induction values close to the ``second peak field'' at which the bulk critical current density steeply increases. A time window is identified during which the decay of the induction is controlled by the slow propagation of the phase transformation front across the sample.