XXII International Conference on the Use of Neutron Scattering in Condensed Matter Research (RNICS-2012), St. Petersburg, Zelenogorsk (October 15-19, 2012)
Elementary excitations

Helical magnetic structures in cubic perovskites

S. M. Dunaevskii

The Petersburg Nuclear Physics Institute, The National Research Center "Kurchatov Institute"

Abstract: One-dimensional helical structures with a finite Hund interaction have been considered in detail. The analytical expressions for the electron spectrum of charge carriers in simplest one-dimensional and three-dimensional helical structures in a simple cubic lattice, which simulates the manganese sublattice in the crystal structure of perovskite, have been derived in the tight-binding approximation. It has been shown that this approach can explain qualitatively the formation of the antiferromagnetic A structure in LaMnO$_3$.

 English version: Physics of the Solid State, 2014, 56:1, 44–46

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