Superconducting nanoribbon with a constriction: A quantum-confined Josephson junction
Superconducting nanoribbon with a constriction: A quantum-confined Josephson junction
Extended defects are known to strongly affect nanoscale superconductors. Here we report the properties of superconducting nanoribbons with a constriction formed between two adjacent step-edges, by solving the Bogoliubov-de Gennes equations self-consistently in the regime where quantum confinement is important. Since the quantum resonances of the superconducting gap in the …