K. Katsumata

Dec 21, 2023 | link.aps.org | S. W. Lovesey |ISIS Facility |K. Katsumata

A magnetic resonance phenomenon is proposed, in which only the orbital degrees of freedom of electrons participate. This previously unexploited magnetic resonance may be called electron orbital resonance (EOR). To this end, a nonmagnetic, singlet ground state is necessary. In addition, the system needs to exhibit the Van Vleck paramagnetism. Conditions for EOR are met by the rare earth perovskite LaCoO3 (LCO). The D5 state of LCO is shown to exhibit the van Vleck paramagnetism that result in EOR.