Superconducting Quantum Point contacts and Maxwell Potential

Details Superconducting Quantum Point contacts and Maxwell Potential Superconducting Quantum Point contacts and Maxwell Potential

2006-10-15

arxiv.org/abs/cond-mat/0610398v2

Mod.Phys.Lett.B21:703-716,2007

Physics

Condensed Matter

Superconductivity

13 pages, 8 figures, some figures are clarified; scheduled to appear in an issue in MPLB Vo.21, (2007)

Scientific paper

10.1142/S021798490701316X

The quantization of the current in a superconducting quantum point contact is reviewed and the critical current is discussed at different temperatures depending on the carrier concentration as well by suggesting a constant potential in the semiconductor and then a Maxwell potential. When the Fermi wave length is comparable with the constriction width we showed that the critical current has a step-like variation as a function of the constriction width and the carrier concentration.

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