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

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

doi:10.1103/PhysRevB.90.064502

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

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

DOI 10.1103/PhysRevB.90.064502 · Physical Review B

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Abstract

We present experimental evidence for a behavior which involves discrete breathers and vortices in a Josephson ladder. Breathers can be visualized as the creation and subsequent annihilation of vortex/antivortex pairs. An externally applied magnetic field breaks the vortex/antivortex symmetry and causes the breather to split apart. The motion of the vortex or antivortex creates multisite 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 the applied field is experimentally observed.

Source-reported materials — not catalogue approval

Formula	Reported Tc (K)	Pressure (GPa)	Type
Nb Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	9	Pressure not reported	unknown