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arXiv · 0707.0569

Spontaneous Fluxon Production in Annular Josephson Tunnel Junctions in the Presence of a Magnetic Field

R. Monaco·M. Aaroe·J. Mygind·R. J. Rivers·V. P. Koshelets
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Abstract

We report on the spontaneous production of fluxons in the presence of a symmetry-breaking magnetic field for annular Josephson tunnel junctions during a thermal quench. The dependence on field intensity $B$ of the probability $\bar{f_1}$ to trap a single defect during the N-S phase transition drastically depends on the sample circumferences. We show that the data can be understood in the framework of the Kibble-Zurek picture of spontaneous defect formation controlled by causal bounds.

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R. Monaco, M. Aaroe, J. Mygind, R. J. Rivers, V. P. Koshelets. 2007-11-15. Spontaneous Fluxon Production in Annular Josephson Tunnel Junctions in the Presence of a Magnetic Field. https://doi.org/10.1103/physrevb.77.054509

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