Breather decay into a vortex/antivortex pair in a Josephson ladder

descriptionPublicationkeyboard_double_arrow_right Article , Preprint 08 Aug 2014Embargo end date: 01 Jan 2014 Spain English Publisher:American Physical Society (APS)Journal:Physical Review B, volume 90 (issn: 1098-0121, eissn: 1550-235X,

Copyright policy )Funded by:NSF | RUI: Nonlinear and Neural...

Authors: Segall, K.; Williams, P.; Svitelskiy, O.; Edwards, D.; Zhelev, N.; Brummer, G.; Mazo, J.J.;

doi: 10.1103/physrevb.90.064502 , 10.48550/arxiv.1403.4520

arXiv: 1403.4520

handle: 10261/117993

Breather decay into a vortex/antivortex pair in a Josephson ladder

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Abstract

We present experimental evidence for a new behavior which involves discrete breathers and vortices in a Josephson Ladder. Breathers can be visualized as the creation and subsequent annihilation of vortex/anti-vortex pairs. An externally applied magnetic field breaks the vortex/anti-vortex symmetry and causes the breather to split apart. The motion of the vortex or anti-vortex creates multi-site breathers, which are always to one side or the other of the original breather depending on the sign of the applied field. This asymmetry in applied field is experimentally observed.

10 pages, 5 figures

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Spain

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Keywords

Superconductivity (cond-mat.supr-con), Condensed Matter - Superconductivity, FOS: Physical sciences

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