Spontaneous fluxon formation in annular Josephson tunnel junctions
Copyright policy )Spontaneous fluxon formation in annular Josephson tunnel junctions
It has been argued by Zurek and Kibble that the likelihood of producing defects in a continuous phase transition depends in a characteristic way on the quench rate. In this paper we discuss our experiment for measuring the Zurek-Kibble scaling exponent sigma for the production of fluxons in annular symmetric Josephson Tunnel Junctions. The predicted exponent is sigma = 0.25, and we find sigma = 0.27 +/- 0.05. Further, there is agreement with the ZK prediction for the overall normalisation.
SUPERFLUID HE-3, Condensed Matter - Superconductivity, MAGNETIC-FIELD, FOS: Physical sciences, COSMOLOGICAL EXPERIMENTS, SYMMETRY BREAKS, Superconductivity (cond-mat.supr-con), TOPOLOGICAL DEFECTS, COSMIC STRINGS, VORTEX FORMATION, KIBBLE CAUSALITY BOUNDS, STRING FORMATION, LOCAL GAUGE-INVARIANCE
SUPERFLUID HE-3, Condensed Matter - Superconductivity, MAGNETIC-FIELD, FOS: Physical sciences, COSMOLOGICAL EXPERIMENTS, SYMMETRY BREAKS, Superconductivity (cond-mat.supr-con), TOPOLOGICAL DEFECTS, COSMIC STRINGS, VORTEX FORMATION, KIBBLE CAUSALITY BOUNDS, STRING FORMATION, LOCAL GAUGE-INVARIANCE
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