Magnetic interference pattern in planar SNS Josephson junctions

G. Mohammadkhani; M. Zareyan; Ya. M. Blanter

doi:10.1103/PhysRevB.77.014520

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Magnetic interference pattern in planar SNS Josephson junctions

G. Mohammadkhani, M. Zareyan, Ya. M. Blanter

DOI 10.1103/PhysRevB.77.014520 · Physical Review B

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Abstract

We study the Josephson current through a ballistic normal metal layer of thickness D, on which two superconducting electrodes are deposited within a distance L of each other. In the presence of an (in-layer) magnetic field, we find that the oscillations of the critical current Ic(Φ) with the magnetic flux Φ are significantly different from an ordinary magnetic interference pattern. Depending on the ratio L∕D and temperature, Ic(Φ) oscillations can have a period smaller than flux quantum Φ0, nonzero minima, and damping rate much smaller than 1∕Φ. A similar anomalous magnetic interference pattern was recently observed experimentally.

Source-reported materials — not catalogue approval

Formula	Reported Tc (K)	Pressure (GPa)	Type
NbTiN Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	—	Pressure not reported	unknown
CrO2 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	—	Pressure not reported	unknown