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Simulation of vortex noise in superconductors in weak applied magnetic fields
KTH, Superseded Departments, Physics.
KTH, Superseded Departments, Physics.ORCID iD: 0000-0003-1164-0831
2004 (English)In: Physical Review B. Condensed Matter and Materials Physics, ISSN 1098-0121, E-ISSN 1550-235X, Vol. 69, no 14Article in journal (Refereed) Published
Abstract [en]

The magnetic-field dependence of flux noise spectra in superconductors is studied by Monte Carlo simulation of vortex dynamics in two- and three-dimensional vortex models. Without an applied magnetic field the flux noise power spectra typically vary with frequency approximately like 1/f(3/2). In this paper we show that in the presence of a weak magnetic field, the spectra instead typically vary approximately like 1/f in a range of temperatures and frequencies. Both types of behavior have been observed in different experiments.

Place, publisher, year, edition, pages
2004. Vol. 69, no 14
Keyword [en]
kosterlitz-thouless transition, josephson-junction arrays, flux-noise, spectra, models, films
National Category
Physical Sciences
Identifiers
URN: urn:nbn:se:kth:diva-23412DOI: 10.1103/PhysRevB.69.144522ISI: 000221426200103Scopus ID: 2-s2.0-37649028388OAI: oai:DiVA.org:kth-23412DiVA: diva2:342110
Note
QC 20100525Available from: 2010-08-10 Created: 2010-08-10 Last updated: 2017-12-12Bibliographically approved

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Wallin, Mats

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