Geometric pi Josephson junction in d-wave superconducting thin films

Details Geometric pi Josephson junction in d-wave superconducting thin films Geometric pi Josephson junction in d-wave superconducting thin films

2007-08-29

arxiv.org/abs/0708.3898v1

Appl. Phys. Lett. 91, 192502 (2007)

Physics

Condensed Matter

Superconductivity

3 pages, 3 figures

Scientific paper

10.1063/1.2801387

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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