Spontaneous fluxon production in annular Josephson tunnel junctions in the presence of a magnetic field

Roberto Monaco, Morten Aarøe, Jesper Mygind, R.J. Rivers, V.P. Koshelets

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Abstract

We report on the spontaneous production of fluxons in annular Josephson tunnel junctions during a thermal quench in the presence of a symmetry-breaking magnetic field. The dependence on field intensity B of the probability (f) over bar (1) to trap a single defect during the N-S phase transition depends drastically on the sample circumferences. We show that this can be understood in the framework of the same picture of spontaneous defect formation that leads to the experimentally well attested scaling behavior of (f) over bar (1) with quench rate in the absence of an external field.
Original languageEnglish
JournalPhysical Review B Condensed Matter
Volume77
Issue number5
Pages (from-to)054509
ISSN0163-1829
DOIs
Publication statusPublished - 2008

Bibliographical note

Copyright 2008 American Physical Society

Keywords

  • COSMIC STRINGS
  • LOCAL GAUGE-INVARIANCE
  • SYMMETRY BREAKS
  • SUPERFLUID HE-3
  • PIECES
  • DEFECT FORMATION
  • PHASE-TRANSITIONS
  • COSMOLOGICAL EXPERIMENTS
  • QUENCH
  • VORTEX FORMATION

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