Spontaneous Fluxon Formation in Annular Josephson Tunnel Junctions

Details Spontaneous Fluxon Formation in Annular Josephson Tunnel Junctions Spontaneous Fluxon Formation in Annular Josephson Tunnel Junctions

2002-07-21

arxiv.org/abs/cond-mat/0207504v1

Physical Review B Volume: 67 Issue: 10 Article Number: 104506 (2003)

Physics

Condensed Matter

Superconductivity

Scientific paper

10.1103/PhysRevB.67.104506

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.

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