Thomas, KJ and Hill, JP and Grenier, S and Kim, YJ and Abbamonte, P and Venema, L and Rusydi, A and Tomioka, Y and Tokura, Y and McMorrow, DF and Sawatzky, G and van Veenendaal, M (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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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.
|Title:||Soft x-ray resonant diffraction study of magnetic and orbital correlations in a manganite near half doping|
|Open access status:||An open access publication. A version is also available from UCL Discovery.|
|Additional information:||The American Physical Society|
|UCL classification:||UCL > School of BEAMS > Faculty of Maths and Physical Sciences > London Centre for Nanotechnology|
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