The Orbital Degree of Freedom in High Entropy Perovskites RVO₃

The extreme local compositional disorder in high entropy compounds can be employed to induce novel phenomena such as tunable magnetism, coherent symmetry breaking, metal-insulator transition and superconductivity. This has attracted intense attention in the last decade. However, how this strong local disorder affects the orbital degree of freedom has not been studied in transition metal oxides. In this talk, I will use RVO₃ perovskite as an example to show how the cooperative Jahn-Teller distortion of t-electrons reacts to the local disorder of the rare earth site.