Supercurrent Quantization in Narrow Channel SNS Junctions
Abstract
We determine the quasi-particle excitation spectrum in the normal region of a narrow ballistic superconductor--normal-metal--superconductor (SNS) Josephson contact. Increasing the effective chemical potential in the contact converts the electronic levels into Andreev-levels carrying supercurrent. The opening of these superchannels leads to a supercurrent quantization which exhibits a non-universal behavior in general and we discuss its dependence on the junction parameters.
- Publication:
-
arXiv e-prints
- Pub Date:
- July 1999
- DOI:
- 10.48550/arXiv.cond-mat/9907460
- arXiv:
- arXiv:cond-mat/9907460
- Bibcode:
- 1999cond.mat..7460C
- Keywords:
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- Condensed Matter - Mesoscopic Systems and Quantum Hall Effect
- E-Print:
- 4 pages, RevTeX, three postscript figures