A-type Antiferromagnetic and C-type Orbital-Ordered State in LaMnO$_3$ Using Cooperative Jahn-Teller Phonons

Physics – Condensed Matter – Strongly Correlated Electrons

Scientific paper

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4 pages, Revtex, with 3 figures embedded in the text. Submitted to Phys. Rev. B

Scientific paper

10.1103/PhysRevB.60.R15009

The effect of Jahn-Teller phonons on the magnetic and orbital structure of LaMnO$_3$ is investigated using a combination of relaxation and Monte Carlo techniques on three-dimensional clusters of MnO$_6$ octahedra. In the physically relevant region of parameter space for LaMnO$_3$, and after including small corrections due to tilting effects, the A-type antiferromagnetic and C-type orbital structures were stabilized, in agreement with experiments.

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