Thomas, KJ; Hill, JP; Grenier, S; Kim, YJ; Abbamonte, P; Venema, L; Rusydi, A; ... van Veenendaal, M; + view all Thomas, KJ; Hill, JP; Grenier, S; Kim, YJ; Abbamonte, P; Venema, L; Rusydi, A; Tomioka, Y; Tokura, Y; McMorrow, DF; Sawatzky, G; van Veenendaal, M; - view fewer (2004) Soft x-ray resonant diffraction study of magnetic and orbital correlations in a manganite near half doping. PHYS REV LETT , 92 (23) , Article 237204. 10.1103/PhysRevLett.92.237204.

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Abstract

We have utilized resonant x-ray diffraction at the Mn L-II,L-III edges in order to directly compare magnetic and orbital correlations in Pr0.6Ca0.4MnO3. Comparing the widths of the magnetic and orbital diffraction peaks, we find that the magnetic correlation length exceeds that of the orbital order by nearly a factor of 2. Furthermore, we observe a large (similar to3 eV) spectral weight shift between the magnetic and orbital resonant line shapes, which cannot be explained within the classic Goodenough picture of a charge-ordered ground state. To explain the shift, we calculate the orbital and magnetic resonant diffraction line shapes based on a relaxed charge-ordered model.

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