Intrinsic pinning in layered antiferromagnetic superconductor
Tomasz Krzyszton (Institute of Low temperatures, Structure, Research, Polish Academy of Sciences, Wroclaw, Poland)
TL;DR
This paper investigates how intrinsic pinning in layered antiferromagnetic superconductors affects various physical properties, revealing the influence of magnetic order on vortex behavior and flux decay.
Contribution
It introduces a model describing the interaction between antiferromagnetic and superconducting subsystems, highlighting the formation of spin-flop domains along vortex cores.
Findings
Magnetization and flux creep behavior depend on the external magnetic field direction.
The activation energy varies with the magnetic field orientation.
Trapped flux decay follows a logarithmic time dependence.
Abstract
The intrinsic pinning in high-temperature superconductor with long range antiferromagnetic order of rare-earth ions confined to the isolating planes is described. The interaction of antiferromagnetic and superconducting subsystems in the mixed state may lead to the creation of spin-flop domain along the vortex core. It is shown that the behavior of several physical quantities such as magnetization, activation energy, current-voltage characteristic and flux creep changes when the direction of the external field changes in the basal a-b plane. It is also shown that the decay of the trapped flux is logarithmic function of time
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