Electronic and magnetic states in doped LaCoO_3
arXiv:cond-mat/9809099 · doi:10.1103/PhysRevB.59.4549
Abstract
The electronic and magnetic states in doped perovskite cobaltites, (La, Sr)CoO_3, are studied in the numerically exact diagonalization method on Co_2O_{11} clusters. For realistic parameter values, it is shown that a high spin state and an intermediate spin state coexist in one-hole doped clusters due to strong p-d mixing. The magnetic states in the doped cobaltites obtained in the calculation explain various experimental results.
4 pages, 2 figures, epsfj.sty