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Coherent X-ray Scattering from Manganite Charge and Orbital Domains

C. S. Nelson·J. P. Hill·Doon Gibbs·F. Yakhou·F. Livet·Y. Tomioka·T. Kimura·Y. Tokura
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Abstract

We report coherent x-ray scattering studies of charge and orbital domains in manganite systems. The experiments were carried out on LaMnO_3 and Pr_{0.6}Ca_{0.4}MnO_3, with the incident photon energy tuned near the Mn K edge. At room temperature, the orbital speckle pattern of LaMnO_3 was observed to be constant over a timescale of at least minutes, which is indicative of static orbital domains on this timescale. For Pr_{0.6}Ca_{0.4}MnO_3, both charge and orbital speckle patterns were observed. The observation of the latter rules out the presence of fast orbital fluctuations, while long time series data-- on the order of several minutes-- were suggestive of slow dynamic behavior. In contrast, the charge order speckle patterns were static.

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C. S. Nelson, J. P. Hill, Doon Gibbs, F. Yakhou, F. Livet, Y. Tomioka, T. Kimura, Y. Tokura. 2002-06-19. Coherent X-ray Scattering from Manganite Charge and Orbital Domains. https://doi.org/10.1103/physrevb.66.134412

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