Interface*

Complex oxide heterostructures provide a large playground of order parameters that can introduce a wide range of emergent phenomena. In the study, we set out to explain the emergent magnetic properties at the interface between YBa₂Cu₃O₇/SrTiO₃. Using density functional theory, we determined the electronic and magnetic properties for a simulated heterostructure with and without oxygen vacancies. It is shown that the sheer presence of the interface is not enough to produce a magnetic response. However, with the introduction of oxygen vacancies, we show that there is a shifting of the d orbital electron energies on the transition-metal atoms that induces a magnetic moment at the interface. This work details the effects of oxygen vacancies on complex oxide heterostructures, which has the ability to provide critical insight into future applications of oxide electronics.