Gaussianity revisited: Exploring the Kibble-Zurek mechanism with superconducting rings
D. J. Weir, R. Monaco, V. P. Koshelets, J. Mygind, R. J. Rivers
TL;DR
This study investigates the Kibble-Zurek mechanism using spontaneous flux in superconducting rings, analyzing finite size and external field effects through simulations, analytics, and experiments, revealing Gaussian approximations effectively describe the phenomena.
Contribution
It provides a comprehensive analysis of the Kibble-Zurek mechanism in superconducting rings, incorporating effects of finite size and external fields with combined simulations, analytics, and experimental validation.
Findings
Gaussian approximations effectively model flux production
Finite size and external fields influence KZ scaling
Experimental results support simulation and analytical models
Abstract
In this paper we use spontaneous flux production in annular superconductors to shed light on the Kibble-Zurek scenario. In particular, we examine the effects of finite size and external fields, neither of which is directly amenable to the KZ analysis. Supported by 1D and 3D simulations, the properties of a superconducting ring are seen to be well represented by analytic Gaussian approximations which encode the KZ scales indirectly. Experimental results for annuli in the presence of external fields corroborate these findings.
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