π States in Josephson Junctions between H3e−B
S.-K. Yip
DOI 10.1103/PhysRevLett.83.3864 · Physical Review Letters
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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 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 equal to 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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