Research

Conceptual design of the control of the spin‐state transition. The left and right sides show the spin–orbital schemes of LS and HS states, respectively. The six 3d electrons occupy the triply degenerate t_2g orbital and the doubly degenerate e_g orbital in different manners. The central spin‐state critical range denotes that the novel spin–orbit states, such as the quantum linear combination states of the different spin‐states, are theoretically possible on the verge of the LS and HS degenerate point. The Sc substitution into LaCoO₃ acts as a control parameter and is expected to push the system toward the critical range.(From Quantum Paramagnet Near Spin‐State Transition)