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Zurek-Kibble Domain Structures: The Dynamics of Spontaneous Vortex Formation in Annular Josephson Tunnel Junctions

R. Monaco, J. Mygind, R. J. Rivers

DOI 10.1103/PhysRevLett.89.080603 · Physical Review Letters

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Abstract

Phase transitions create a domain structure with defects, which has been argued by Zurek and Kibble (ZK) to depend in a characteristic way on the quench rate. We present an experiment to measure the ZK scaling exponent σ. Using long symmetric Josephson tunnel junctions, for which the predicted index is σ=0.25, we find σ=0.27±0.05. Further, we agree with the ZK prediction for the overall normalization.

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