Characteristic potentials for mesoscopic rings threaded by an Aharonov-Bohm flux

摘要: Electro-static potentials for samples with the topology of a ring and penetrated by an Aharonov-Bohm flux are discussed. The sensitivity electron-density distribution to small variations in generates effective electro-static potential which is itself periodic function flux. We investigate simple model sensitive leads persistent current enhanced compared that loop non-interacting electrons. For sample geometries contacts flux-induced capacitance. This capacitance gives variation charge due increment contrasted electro-chemical potential. discussion formulated terms characteristic functions give interior conductor external control parameters (flux, potentials).