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pi states in Josephson Junction between He-3-B

S. -K. Yip
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Abstract

We investigate the dependence of the current-phase relationship on the orientation of the order parameter for a pinhole between two $^3$He-B reservoirs. We show that, due to the internal spin structure of the superfluid, the energy of the junction may have a relative minimum at phase difference equals $π$ at low temperatures. The dependence of the supercurrent on the direction of an applied magnetic field can be used to verify the present mechanism for the ``$π$-states''.

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S. -K. Yip. 1999-07-07. pi states in Josephson Junction between He-3-B. https://doi.org/10.1103/physrevlett.83.3864

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