pi states in Josephson Junction between He-3-B
S. -K. Yip
Abstract
We investigate the dependence of the current-phase relationship on the orientation of the order parameter for a pinhole between two 3He-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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