Unraveling orbital ordering in La0.5Sr1.5MnO4

Unraveling orbital ordering in La0.5Sr1.5MnO4

Orbital ordering (OO) in the layered perovskite La0.5Sr1.5MnO4 has been investigated using the enhanced sensitivity of soft x-ray resonant diffraction at the Mn L edges. The energy dependence of an OO diffraction peak over the L(2,3) edges is compared to ligand-field calculations allowing a distinct...

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Veröffentlicht in:Physical review letters 2004-02, Vol.92 (5), p.056403-056403
Hauptverfasser: Dhesi, S S, Mirone, A, De Nadaï, C, Ohresser, P, Bencok, P, Brookes, N B, Reutler, P, Revcolevschi, A, Tagliaferri, A, Toulemonde, O, van der Laan, G
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Sprache:eng
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Zusammenfassung:Orbital ordering (OO) in the layered perovskite La0.5Sr1.5MnO4 has been investigated using the enhanced sensitivity of soft x-ray resonant diffraction at the Mn L edges. The energy dependence of an OO diffraction peak over the L(2,3) edges is compared to ligand-field calculations allowing a distinction between the influences of Jahn-Teller distortions and spin correlations. The energy dependence of the diffraction peak at the Mn L1 edge is remarkably different from that observed at the Mn K edge.
ISSN:0031-9007
DOI:10.1103/PhysRevLett.92.056403