Hund’s coupling, or the intra-atomic exchange, can drive novel quantum phases in multi-orbital systems, but this requires precise control of orbital occupancy. Ko et al. report an orbital-selective metal-to-insulator transition driven by Hund´s physics via symmetry-preserving strain tuning in monolayer SrRuO3.
- Eun Kyo Ko
- Sungsoo Hahn
- Tae Won Noh
