Electronic and magnetic states in doped LaCoO_3

Details Electronic and magnetic states in doped LaCoO_3 Electronic and magnetic states in doped LaCoO_3

1998-09-05

arxiv.org/abs/cond-mat/9809099v1

Phys. Rev. B 59, 4549 (1999)

Physics

Condensed Matter

Strongly Correlated Electrons

4 pages, 2 figures, epsfj.sty

Scientific paper

10.1103/PhysRevB.59.4549

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.

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