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Charge order versus Zener polarons: ferroelectricity in manganites | Dmitry V.Efremov
; Jeroen van den Brink
; Daniel I. Khomskii
; | Date: |
25 Jun 2003 | Subject: | Strongly Correlated Electrons | cond-mat.str-el | Abstract: | 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 considerable part of the phase diagram the groundstate has a magnetic order that is intermediate between the canonical magnetic CE-phase and a state that we identify as the recently observed Zener polaron state. The intermediate phase shows a type of charge ordering that breaks inversion symmetry and is therefore predicted to be ferroelectric. | Source: | arXiv, cond-mat/0306651 | Services: | Forum | Review | PDF | Favorites |
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