2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/176126The 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.13 pages, 8 figures, some figures are clarified; scheduled to appear in an issue in MPLB Vo.21, (2007)SuperconductivityHigh Energy Physics - Theorytext