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If both segments are rather short, the whole junction can be described by an \\emph{effective} current-phase relation for the spatially averaged phase $\\psi$, which includes the usual term $\\propto\\sin(\\psi)$, a \\emph{negative} second harmonic term $\\propto\\sin(2\\psi)$ as well as the unusual term $\\propto H \\cos\\psi$ tunable by magnetic field $H$. 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