2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/22673We report on non-equilibrium electronic transport through normal-metal (Cu) nanobridges coupled to large reservoirs at low temperatures. We observe a logarithmic temperature dependence of the zero-bias conductance, as well as a universal scaling behavior of the differential conductance. Our results are explained by electron-electron interactions in diffusive metals in the zero-dimensional limit.RevTex, 4 pagesMesoscale and Nanoscale Physicstext