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Relation of Double Exchange Ferromagnetic and Charge Ordered Phases
Author(s) -
Bärner K.,
Zavadskii E.A.
Publication year - 2002
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/1521-3951(200208)232:2<356::aid-pssb356>3.0.co;2-c
Subject(s) - superexchange , condensed matter physics , ferromagnetism , phase diagram , phase (matter) , charge ordering , electron , magnon , charge (physics) , physics , materials science , quantum mechanics
Electronic–magnetic phase diagrams are proposed for double exchange–superexchange systems which include charge ordering. The results come very close even to the very complex experimental phase diagrams which are observed with the manganites. Also, phase separation phenomena and unusual pressure dependences of the transition temperatures can be expected, both being observed experimentally in manganites, too. The approach also opens up a possibility to describe the large variety of phases as observed in electron–magnon/electron–phonon coupled systems in a comprehensive manner.