Abstract:We examine a Josephson junction with two ferromagnet's and a magnetic impurity sandwiched between two superconductors. In such ferromagnetic Josephson junctions equilibrium spin torque exists only when ferromagnet's are misaligned. This is explained via the "conventional" mechanism of spin transfer torque, which owes its origin to the misalignment of two ferromagnet's. However, we see surprisingly when the magnetic moments of the ferromagnet's are aligned parallel or anti-parallel, there is a finite equilibriu… Show more
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