Effect of current direction on the dynamics of Josephson-junction arrays
L. L. Sohn, M. S. Rzchowski, J. U. Free, M. Tinkham, C. J. Lobb
DOI 10.1103/PhysRevB.45.3003 · Physical Review B
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Abstract
We present an extensive experimental and theoretical study of the effect that the current direction has on the dynamical properties of rf and dc current-biased overdamped Josephson-junction arrays. We show that a strong spatial symmetry of the array about the direction of the macroscopic current flow is necessary for arrays to show only nteger giant Shapiro steps. If this symmetry is broken, arrays will produce both fractional and integer giant Shapiro steps. A moving-vortex model and a pendulum model are used to describe our experimental and computational results.
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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