Non Local Effects in Window Type Josephson Junctions

We investigate the influence of the idle region for a thin window junction on its static behaviour which is shown by the characteristic curves of the maximum critical current versus the extenally applied magnetic field. This system reduces to a one dimensional integro-differential equation. The numerical solution of the non-local equation shows that the existence of the idle region introduces a new effective length, which depends on its size. The solution differs considerably from the known sine-Gordon soliton, while the I_c - H curves with inline and overlap current feed change significantly.

Pacs numbers: 74.50.+r, 74.60.Jg, 03.40.Kf, 02.90.+p

J. G. Caputo^a, N. Flytzanis^b, V. Kurin^b,c, N. Lazarides^b and E. Vavalis^d

^a: Laboratoire de Mathématiques, Institut de Sciences Appliquées and U.R.A. C.N.R.S. 1378, BP8, 76131 Mont-Saint-Aignan Cedex, France

^b: Physics Department, University of Crete,71409 Heraklion, Greece

^c: Institute for Physics of Microstructures, RAS, Nijny-Novgorod, Russia

^d: Mathematics Department, University of Crete, 71409 Heraklion, Greece and IACM, FORTH, 71110, Heraklion, Greece