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A theory of π/2 superconducting Josephson junctions

A. Zyuzin·B. Spivak
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Abstract

We consider theoretically a Josephson junction with a superconducting critical current density which has a random sign along the junction's surface. We show that the ground state of the junction corresponds to the phase difference equal to π/2. Such a situation can take place in superconductor- ferromagnet junction.

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A. Zyuzin, B. Spivak. 1999-10-05. A theory of π/2 superconducting Josephson junctions. https://doi.org/10.1103/physrevb.61.5902

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