Fizika Nizkikh Temperatur: Volume 48, Number 1 (January 2022), p. 42-47    ( to contents , go back )

Magnetic frustration in insulating Jahn–Teller manganite crystals

L.Gonchar

Ural State University of Railway Transport, Yekaterinburg 620034, Russia
Ural Federal University named after First President of Russia B. N. Yeltsin, Yekaterinburg 620002, Russia
E-mail: l.e.gonchar@urfu.ru
pos Анотація:507

Received June 18, 2021, published online November 25, 2021

Abstract

In insulating compounds R1–xAxMnO3, the role of orbital ordering in magnetic competition is emphasized. The conditions of ordered state’s destruction are estimated. The ranges of orbital structure mixing angles to form frustrated or low-dimensional magnetic structures are determined. The influence of nonlinear and nonlocal terms of vibronic interaction on orbital ordering and magnetic structure are discussed. The possible magnetic structures are described.

Key words: Jahn–Teller effect, orbitally dependent superexchange interaction, manganites, charge ordering, frustrated magnetic structure.

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