Shapiro steps in Josephson junctions with alternating critical current density

Details Shapiro steps in Josephson junctions with alternating critical current density Shapiro steps in Josephson junctions with alternating critical current density

2007-08-09

arxiv.org/abs/0708.1222v1

Phys. Rev. B 76, 054518 (2007)

Physics

Condensed Matter

Superconductivity

5 pages, 3 figures, accepted for publication in Phys. Rev. B

Scientific paper

10.1103/PhysRevB.76.054518

We treat theoretically Shapiro steps in tunnel Josephson junctions with spatially alternating critical current density. Explicit analytical formulas for the width of the first integer (normal) and half-integer (anomalous) Shapiro steps are derived for short junctions. We develop coarse-graining approach, which describes Shapiro steps in the voltage-current curves of the asymmetric grain boundaries in YBCO thin films and different superconductor-ferromagnet-superconductor Josephson-type heterostructures.

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