Berlin 2005 – wissenschaftliches Programm

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TT: Tiefe Temperaturen

TT 16: Posters Correlated Electrons, Measuring Devices, Cryotechnique

TT 16.79: Poster

Samstag, 5. März 2005, 11:00–16:30, Poster TU C

Orbital ordering in manganites in the band approach. — •Dmitri Efremov¹ and Daniil Khomskii² — ¹TU Dresden, 01062 Dresden — ²University of Cologne, 50937 Cologne

We consider the orbital ordering in LaMnO₃ and similar systems, proceeding from the band picture. For the realistic magnetic structure of A-type there exist the nesting between two e_g-bands and the nesting inside the bands. We show that the interband nesting is more effective. It results in an orbital ordering – orbital density wave (ODW), the type of which coincides with those existing in LaMnO₃.