Condensed Matter Physics, 2006, vol. 9, No. 1(45), p. 169177, English
DOI:10.5488/CMP.9.1.169
Title:
On the theory of current states in
superconducting junctions of SNINS type
Author(s):
 V.E.Sakhnyuk
(Department of Theoretical and
Mathematical Physics, Lesya Ukrainka Volyn States University,
13 Voli Avenue, 43000 Lutsk, Ukraine)
,

 A.V.Svidzynskyj
(Department of Theoretical and
Mathematical Physics, Lesya Ukrainka Volyn States University,
13 Voli Avenue, 43000 Lutsk, Ukraine)

The behavior of the order parameter close to the NS interface in
an SNINS junction is considered. To this end, a linear integral
equation, which is valid near the superconductornormal metal
interface, is obtained and researched. The GinzburgLandau
equation is solved taking into account the effect of the current
on the space behaviour of the order parameter. Applying the method
of quasiorthogonality to asymptotics, the boundary condition for
the GinzburgLandau equation is obtained. The calculation of the
current states, which can exist in an SNINS junction is carried
out. We assume the normal layer thickness to be arbitrary and the
temperature to be close to critical.
Key words: current, critical temperature, GinzburgLandau equation,
the order parameter
PACS: 74.50.+r
