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Vortex-antivortex crystals, fractal structures, and orbital glasses in arrays of Josephson junctions

journal contribution
posted on 03.12.2015, 11:35 authored by Derek Michael Forrester, K.E. Kuerten, Feodor Kusmartsev
We have found that for large varieties of one-dimensional arrangements of Josephson junctions, such as discrete Josephson transmission lines, stable vortex-anti-vortex structures may be spontaneously created. These highly complex stable, spatial configurations of Josephson vortices and anti-vortices also display fractal features in both the energy spectrum and the spatial ordering of the superconducting phase differences associated with different junctions. These vortex structures are related to an exponential number of local minima that are separated by very large barriers within the highly complex energy landscape. The novel Josephson vortex glass arises without any disorder, whilst the fractal energy spectrum involves weak interactions of Josephson vortices. The Josephson glass and its associated fractal properties may be experimentally detected by measuring the switching current distribution.

Funding

The work has been supported by the Europe an Science Foundation in the framework of the network-program “Arrays of Quantum Do ts and Josephson Junctions” and EPSRC grant GR/S05052/01

History

School

  • Aeronautical, Automotive, Chemical and Materials Engineering

Department

  • Chemical Engineering

Published in

Moldavian Journal of the Physical Sciences

Volume

6

Issue

3

Pages

? - ? (15)

Citation

FORRESTER, D.M., KUERTEN, K.E. and KUSMARTSEV, F.V., 2007. Vortex-antivortex crystals, fractal structures, and orbital glasses in arrays of Josephson junctions. Moldavian Journal of the Physical Sciences, 6 (3).

Publisher

© Academy of Sciences of the Republic of Moldova

Version

VoR (Version of Record)

Publisher statement

This work is made available according to the conditions of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0) licence. Full details of this licence are available at: https://creativecommons.org/licenses/by-nc-nd/4.0/

Publication date

2007

Notes

This paper is in closed access.

ISSN

1810-648X

Language

en

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