Speaker: Johan Carlström
Abstract: The doped Mott insulator, where charge carriers propagate against a spin background, serves as a paradigmatic model for strongly correlated electronic systems. In this framework, two fundamental energy scales emerge: the kinetic energy, stemming from the delocalisation of charge carriers, and the magnetic energy, driven by super-exchange processes that promote antiferromagnetic order. When the onsite repulsion is strong, super-exchange is suppressed, and spin correlations are predominantly governed by delocalisation—a phenomenon known as kinetic magnetism.