Electronic and magnetic states in doped LaCoO3
Abstract
The electronic and magnetic states in doped perovskite cobaltites, (La, Sr)CoO3, are studied in the numerically exact diagonalization method on Co2O11 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.
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