Breather decay into a vortex/anti-vortex pair in a Josephson Ladder
arXiv:1403.4520 · doi:10.1103/PhysRevB.90.064502
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.
arXiv comment10 pages, 5 figures
References in corpus (8)
- Solitons in nonlinear lattices
- Discrete breathers in nonlinear lattices: Experimental detection in a Josephson array
- Observation of breathers in Josephson ladders
- Observation of Hybrid Soliton Vortex-Ring Structures in Bose-Einstein Condensates
- Two-dimensional Vortices in Superconductors
- Discrete Breathers in Josephson Ladders
- Spontaneous creation of discrete breathers in Josephson arrays
- Experimental Critical Current Patterns in Josephson Junction Ladders