Interlayer fluxon interaction in Josephson stacks
Alexey V. Ustinov, Hermann Kohlstedt
DOI 10.1103/PhysRevB.54.6111 · Physical Review B
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Abstract
In a stack of Josephson tunnel junctions both attractive and repulsive interactions may exist between Josephson vortices (fluxons) allocated in different tunnel barriers. We report experimental observations of two modes of coherent fluxon motion in double-junction stacks. At the low-velocity mode, as well as in statics, vortices in neighboring Josephson layers repel each other. In contrast, the high-velocity mode corresponds to an attractive interlayer interaction between vortices of the same polarity.
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. | — | Pressure not reported | unknown |
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