A-type Antiferromagnetic and C-type Orbital-Ordered State in LaMnO3 Using Cooperative Jahn-Teller Phonons
Takashi Hotta, Seiji Yunoki, Matthias Mayr, Elbio Dagotto
Abstract
The effect of Jahn-Teller phonons on the magnetic and orbital structure of LaMnO3 is investigated using a combination of relaxation and Monte Carlo techniques on three-dimensional clusters of MnO6 octahedra. In the physically relevant region of parameter space for LaMnO3, 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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