2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/151954We consider resonant vortices around nodal points of the wavefunction in electron transport through a mesoscopic device. With a suitable choice of the device geometry, the dominating role is played by single vortices of a preferred orientation. To characterize strength of the resulting magnetic moment we have introduced a magnetance, the quantity defined in analogy with the device conductance. Its basic properties and possible experimental detection are discussed.A RevTeX source file with three ps figuresMesoscale and Nanoscale Physicstext