Geometric pi Josephson junction in d-wave superconducting thin films

A. Gumann; C. Iniotakis; N. Schopohl

doi:10.1063/1.2801387

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arXiv · 0708.3898

Geometric pi Josephson junction in d-wave superconducting thin films

A. Gumann·C. Iniotakis·N. Schopohl

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Abstract

A novel way to realize a pi Josephson junction is proposed, based on a weak link in an unconventional d-wave superconductor with appropriately chosen boundary geometry. The critical current of such a junction is calculated from a fully selfconsistent solution of microscopic Eilenberger theory of superconductivity. The results clearly show, that a transition to a pi Josephson junction occurs for both low temperatures and small sizes of the geometry.

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A. Gumann, C. Iniotakis, N. Schopohl. 2007-08-29. Geometric pi Josephson junction in d-wave superconducting thin films. https://doi.org/10.1063/1.2801387

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