Magnetic field dependence of critical currents of cross-type Josephson junctions with inhomogeneous critical current density under oblique magnetic fields

Studies of the magnetic interference of sandwich-type Josephson junctions in which perpendicular or oblique magnetic fields are applied to the junction plane have received less attention than those where the applied magnetic fields are parallel. Recently, it has been theoretically demonstrated that...

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Bibliographic Details
Published in:Japanese Journal of Applied Physics 2024-04, Vol.63 (4), p.43001
Main Authors: Haraoka, Soma, Otabe, Edmund Soji, Mawatari, Yasunori
Format: Article
Language:English
Subjects:
critical current
Critical current density
current density
Josephson junction
Josephson junctions
magnetic field
Magnetic fields
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Summary:Studies of the magnetic interference of sandwich-type Josephson junctions in which perpendicular or oblique magnetic fields are applied to the junction plane have received less attention than those where the applied magnetic fields are parallel. Recently, it has been theoretically demonstrated that a variety of magnetic interferences of the critical currents appear when oblique magnetic fields are applied to a cross-type junction with homogeneous critical current density. We theoretically investigated the effect of the inhomogeneous critical current density in the junction plane, and found that more complicated magnetic interferences appeared. We considered the distribution of the current density flowing through the junction plane to explore the cause of these complex magnetic interferences.
ISSN:0021-4922
1347-4065
DOI:10.35848/1347-4065/ad3caa