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 L2;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.
Unraveling Orbital Ordering in La0.5 Sr1.5 MnO4
TAGLIAFERRI, ALBERTO;
2004-01-01
Abstract
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 L2;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.File in questo prodotto:
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S.S.Dhesi,A.Mirone,C.DeNadaı,P.Ohresser,P.Bencok,N.B.Brookes,P.Reutler,A.Revcolevschi,A.Tagliaferri,O.Toulemonde,G.van_der_Laan,PRL_92,056403(2004).pdf
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