pi states in Josephson Junction between He-3-B

Details pi states in Josephson Junction between He-3-B pi states in Josephson Junction between He-3-B

1999-07-07

arxiv.org/abs/cond-mat/9907096v1

Physics

Condensed Matter

Superconductivity

5 figures in postscript

Scientific paper

10.1103/PhysRevLett.83.3864

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 $\pi$ 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 ``$\pi$-states''.

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