High-field vortices in Josephson junctions with alternating critical current density
Maayan Moshe, R. G. Mints
DOI 10.1103/PhysRevB.76.140507 · Physical Review B
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Abstract
We study long Josephson junctions with the critical current density alternating along the junction. Equilibrium field-synchronized (FS) states are shown to exist if the applied field is from narrow intervals centered around equidistant series of resonant fields Hm. In the mth FS state, the flux per period of the alternating critical current density ϕi remains constant and is equal to an integer amount of flux quanta, ϕi=mϕ0. The values of Hm are much higher than the flux penetration field Hs. Two types of single Josephson vortices carrying fluxes ϕ0 or/and ϕ0∕2 can exist in the FS states. Specific stepwise resonances in the current-voltage characteristics might be caused by periodic motion of these vortices between the edges of the junction.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| YBa2Cu3O7-x Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
| 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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