Cook, P M A and Hui, V C and Lambert, Colin (1995) Giant conductance oscillations in superconducting phase gradiometers. Europhysics Letters, 30 (6). pp. 355-360. ISSN 0295-5075Full text not available from this repository.
A new class of superconductivity-enhanced, quasi-particle interference effects (SEQUINs) is suggested, based on interference from the order parameter phase gradient of a single superconductor (S) in contact with a normal metallic lead (N) of finite width M. By solving the Bogoliubov-de Gennes equation in two dimensions, it is predicted that the electrical conductance will oscillate as the phase gradient v at 90 degrees to the interface is increased, with period ($) over bar v = 2 pi/M. This effect is enhanced by the presence of a Schottky barrier at the interface and is also present in N-S-N structures. The size of the effect scales with the number of open channels and can be much greater than e(2)/h.
|Journal or Publication Title:||Europhysics Letters|
|Subjects:||Q Science > QC Physics|
|Departments:||Faculty of Science and Technology > Physics|
|Deposited On:||25 Oct 2012 14:48|
|Last Modified:||10 Apr 2014 00:08|
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