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Temperature-Dependent X-Ray Absorption Spectroscopy of Colossal Magnetoresistive Perovskites

N. Mannella·A. Rosenhahn·M. Watanabe·B. Sell·A. Nambu·S. Ritchey·E. Arenholz·A. Young·Y. Tomioka·C. S. Fadley
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Abstract

The temperature dependence of the O K-edge pre-edge structure in the x-ray absorption spectra of the perovskites La(1-x)A(x)MnO(3), (A = Ca, Sr; x = 0.3, 0.4) reveals a correlation between the disappearance of the splitting in the pre-edge region and the presence of Jahn-Teller distortions. The different magnitudes of the distortions for different compounds is proposed to explain some dissimilarity in the line shape of the spectra taken above the Curie temperature.

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N. Mannella, A. Rosenhahn, M. Watanabe, B. Sell, A. Nambu, S. Ritchey, E. Arenholz, A. Young, Y. Tomioka, C. S. Fadley. 2005-01-11. Temperature-Dependent X-Ray Absorption Spectroscopy of Colossal Magnetoresistive Perovskites. https://doi.org/10.1103/physrevb.71.125117

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