Josephson vortices with fractional flux quanta at YBa2Cu3O7−x grain boundaries
R. G. Mints, Ilya Papiashvili
DOI 10.1103/PhysRevB.64.134501 · Physical Review B
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Abstract
We report numerical simulations of magnetic flux patterns in asymmetric 45° [001]-tilt grain boundaries in YBa2Cu3O7−x superconducting films. The grain boundaries are treated as Josephson junctions with a critical current density jc(x) alternating rapidly along the junctions with a typical length scale which is much less than Josephson penetration depth. We demonstrate the existence of Josephson vortices with fractional flux quanta for both periodic and random jc(x). A method is proposed to extract these “fractional” vortices from experimental flux patterns.
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 |
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