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Charge order versus Zener polarons: ferroelectricity in manganites
Dmitry V. Efremov, Jeroen van den Brink, Daniel I. Khomskii
We show that in manganites close to half-doping novel non-bipartite magnetic phases appear due to the interplay between double exchange, superexchange and orbital ordering. In cons…
Orbital ordering in charge transfer insulators
Maxim Mostovoy, Daniel Khomskii
We discuss a new mechanism of orbital ordering, which in charge transfer insulators is more important than the usual exchange interactions and which can make the very type of the g…
Orbital ordering and frustrations
Daniel Khomskii, Maxim Mostovoy
An orbital ordering occurs in many transition metal compounds with Jahn-Teller ions and plays an important role in these materials. At the same time, exchange interactions in orbit…