Subharmonic energy-gap structure in superconducting weak links
We present corrected calculations of the subharmonic energy-gap structure using the model of Octavio, Tinkham, Blonder, and Klapwijk, which includes the effect of normal scattering in the weak link. We show that while the overall predictions of this model do not change qualitatively, the details of the predicted curves are different and in better agreement with experiment. We also present calculation of the current-voltage characteristics and of the excess currents for T = 0, as the normal scattering parameter Z is varied. We also show how the calculation can be shortened using symmetry arguments and discuss how this model improves the understanding of the connection between weak links and tunnel junctions.
- Research Organization:
- Physics Laboratory I, The Technical University of Denmark, DK-2800 Lyngby, Denmark
- OSTI ID:
- 7081241
- Journal Information:
- Phys. Rev. B: Condens. Matter; (United States), Journal Name: Phys. Rev. B: Condens. Matter; (United States) Vol. 38:13; ISSN PRBMD
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ABSOLUTE ZERO TEMPERATURE
BOLTZMANN EQUATION
COMPUTER CODES
DIFFERENTIAL EQUATIONS
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
ENERGY GAP
EQUATIONS
JOSEPHSON JUNCTIONS
JUNCTIONS
PARTIAL DIFFERENTIAL EQUATIONS
PHYSICAL PROPERTIES
QUASI PARTICLES
SUPERCONDUCTING JUNCTIONS
SUPERCONDUCTIVITY
TUNNEL EFFECT