Josephson vortices with fractional flux quanta at YBa2Cu3O7-x grain boundaries

R. G. Mints*, Ilya Papiashvili

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

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.

Original languageEnglish
Article number134501
Pages (from-to)1345011-1345015
Number of pages5
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume64
Issue number13
StatePublished - 1 Oct 2001

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