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

Journal Article · Fri Feb 01 00:00:00 EST 2008 · Physical Review. B, Condensed Matter and Materials Physics

DOI:https://doi.org/10.1103/PHYSREVB.77.054509· OSTI ID:21070027

Monaco, R; Aaroe, M; Mygind, J; Rivers, R J; Koshelets, V P ^[1]

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1. Istituto di Cibernetica del C.N.R., 80078 Pozzuoli (Italy) and Unita INFM-Dipartimento di Fisica, Universita di Salerno, 84081 Baronissi (Italy)

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{sub 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{sub 1} with quench rate in the absence of an external field.

• OSTI ID: 21070027
• Journal Information: Physical Review. B, Condensed Matter and Materials Physics, Vol. 77, Issue 5; Other Information: DOI: 10.1103/PhysRevB.77.054509; (c) 2008 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 1098-0121
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
36 MATERIALS SCIENCE
DEFECTS
JOSEPHSON EFFECT
MAGNETIC FIELDS
PHASE TRANSFORMATIONS
POSTULATED PARTICLES
SUPERCONDUCTING JUNCTIONS
SYMMETRY BREAKING
TUNNEL EFFECT