Theory Meets Experiment in Low-Dimensional Structures with Correlated Electrons

Degenerate orbitals in the presence of electronic correlation and an electron reservoir can behave like a two-level system. When the degeneracy is broken, this isospin character of the system is preserved albeit an energy cost. This gives rise to an inelastic effect with the peculiarity of a strong link between energy threshold and spatial distribution of the change in differential conductance. I will show the theory for an experimental system that displays this effect [PRL 121, 226402 (2018)].