Physics – Condensed Matter – Superconductivity
Scientific paper
2002-08-30
Physics
Condensed Matter
Superconductivity
7 pages, 8 figures
Scientific paper
10.1103/PhysRevE.67.036607
We present experimental observation of broken-symmetry states in a superconducting loop with three Josephson junctions. These states are generic for discrete breathers in Josephson ladders. The existence region of the breather-like states is found to be in good accordance with the theoretical expectations. We observed three different resonant states in the current-voltage characteristics of the broken-symmetry state, as predicted by theory. The experimental dependence of the resonances on the external magnetic field is studied in detail.
Pignatelli F.
Ustinov Alexey V.
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