Finding True Kugel-Khomskii Materials

Explore the search for true Kugel-Khomskii materials in this 37-minute conference talk by Eva Pavarini at the Erwin Schrödinger International Institute for Mathematics and Physics. Delve into the history of the Kugel-Khomskii (KK) super-exchange mechanism, which demonstrated that orbital ordering in strongly-correlated systems can arise from purely electronic interactions. Learn about the challenges in finding materials where this mechanism dominates and examine textbook cases like KCuF3 and LaMnO3. Discover recently identified systems where KK super-exchange plays a crucial role and investigate the unique interplay between spin and orbital degrees of freedom in these materials. Gain insights into the ongoing research in this field, supported by references to key scientific papers, as part of the Workshop on "Spin-Orbit Entangled Quantum Magnetism" held at ESI in September 2024.