Reference : Velocimetry of superconducting vortices based on stroboscopic resonances
Scientific journals : Article
Physical, chemical, mathematical & earth Sciences : Physics
http://hdl.handle.net/2268/202860
Velocimetry of superconducting vortices based on stroboscopic resonances
English
Jelic, Zeljko mailto [Université de Liège > Département de physique > Physique expérimentale des matériaux nanostructurés >]
Milosevic, Milorad [Uniervsiteit Antwerpen > Physics > > >]
Silhanek, Alejandro mailto [Université de Liège > Département de physique > Physique expérimentale des matériaux nanostructurés >]
24-Oct-2016
Scientific Reports
Nature Publishing Group
6
35687
Yes (verified by ORBi)
International
2045-2322
London
United Kingdom
[en] superconductivity ; Vortex motion ; stroboscopic pinning
[en] An experimental determination of the mean vortex velocity in superconductors mostly
relies on the measurement of flux-flow resistance with magnetic field, temperature, or driving
current. In the present work we introduce a method combining conventional transport
measurements and a frequency-tuned flashing pinning potential to obtain reliable estimates
of the vortex velocity. The proposed device is characterized using the time-dependent
Ginzburg-Landau formalism, where the velocimetry method exploits the resonances in mean
vortex dissipation when temporal commensuration occurs between the vortex crossings and
the flashing potential. We discuss the sensitivity of the proposed technique on applied current,
temperature and heat diffusion, as well as the vortex core deformations during fast
motion.
http://hdl.handle.net/2268/202860
10.1038/srep35687
http://www.nature.com/articles/srep35687
http://www.nature.com/articles/srep35687

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