Temperature-dependent X-ray absorption spectroscopy of colossal magnetoresistive perovskites

  • chair:

    Mannella, N. / Rosenhahn, A. / Watanabe, M. / Sell, B. / Nambu, A. / Ritchey, S. / Arenholz, E. / Young, A. / Tomioka, Y. / Fadley, C. (2005)
  • place:

    Physical Review B 71 (2005), 12
  • Date: 2005

  • Mannella, N. / Rosenhahn, A. / Watanabe, M. / Sell, B. / Nambu, A. / Ritchey, S. / Arenholz, E. / Young, A. / Tomioka, Y. / Fadley, C. (2005): „Temperature-dependent X-ray absorption spectroscopy of colossal magnetoresistive perovskites“. In: Physical Review B 71 (2005), 12

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 are proposed to explain some dissimilarities in the line shapes of the spectra taken above the Curie temperature.

 

 

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