Linear spin and orbital wave theory for undoped manganites

Details Linear spin and orbital wave theory for undoped manganites Linear spin and orbital wave theory for undoped manganites

1999-08-31

arxiv.org/abs/cond-mat/9908464v1

Physics

Condensed Matter

Strongly Correlated Electrons

12 pages, 2 figures

Scientific paper

We present a linear spin and orbital wave theory to account for the spin and orbital orderings observed experimentally in undoped manganite. It is found that the anisotropy of the magnetic structure is closely related to the orbital ordering, and the Jahn-Teller effect stabilizes the orbital ordering. The phase diagram and the low energy excitation spectra for both spin and orbital orderings are obtained. The calculated critical temperatures can be quantitatively comparable to the experimental data.

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