Dresden 2009 – wissenschaftliches Programm
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TT: Fachverband Tiefe Temperaturen
TT 33: Postersession Correlated Electrons: Metal Insulator Transition, Spin Systems and Itinerant Magnets
TT 33.10: Poster
Mittwoch, 25. März 2009, 14:00–18:00, P1A
The coupled electronic order of manganese and oxygen states in doped manganites — •Jochen Geck1,2, David G. Hawthorn3, Kyle M. Shen4, Hiroki Wadati2, Enrico Schierle5, Liu H. Tjeng6, Hsueh-Hung Wu6, Christian Schüßler-Langeheine6, and George A. Sawatzky2 — 1IFW Dresden, Germany — 2University of British Columbia, Canada — 3University of Waterloo, Canada — 4Cornell University, USA — 5Helmholtz-Zentrum Berlin, Germany — 6University of Cologne, Germany
Comparing resonant soft x-ray scattering (RSXS) experiments and realistic many-body calculations, the nature of the electronic crystal formed in the low-temperature phase of La7/8Sr1/8MnO3 is investigated. The analysis of the experimental data implies that the modulation of the Mn-valence must be very small and that the detected Mn-ordering is mainly of orbital nature. The emerging picture of manganese orbital order, which is coupled to charge and orbital order of the O 2p-states, seems to be a general feature of electronically ordered manganites.