Instability of a rectangular vortex lattice in a stack of two long Josephson junctions
A. V. Chiginev, V. V. Kurin
DOI 10.1103/PhysRevB.66.052510 · Physical Review B
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Abstract
We investigate the stability of a rectangular Josephson vortex lattice in a stack of two long Josephson junctions. It is shown that in an infinite stack at low velocities the lattice is unstable with respect to triangular vortex lattice formation and at high velocities the lattice may be either stable or unstable due to parametric resonance. This resonance may be “suppressed” in three ways: (i) by increase of damping in the system, (ii) by the increase of the external magnetic field, or (iii) by increase of the velocity of the lattice. We show that the finineness of the stack may provide the stability of the rectangular vortex lattice.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| Nb/Al-AlOx/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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