Geometric pi Josephson junction in d-wave superconducting thin films
arXiv:0708.3898 · doi:10.1063/1.2801387
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.
3 pages, 3 figures