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Optical Investigations of La_{7/8}Sr_{1/8}MnO_3

J. H. Jung·K. H. Kim·H. J. Lee·J. S. Ahn·N. J. Hur·T. W. Noh·M. S. Kim·J. -G. Park
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Abstract

We investigated temperature dependent optical conductivity spectra of La_{7/8}Sr_{1/8}MnO_3. Its phonon bending mode starts to be splitted near a structural phase transition temperature. With further cooling, strength of a mid-infrared small polaron peak, which is located at 0.4 eV, becomes increased. These temperature dependent changes in the phonon spectra and the polaron absorption peaks were explained by a phase separation and a percolation-type transition.

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J. H. Jung, K. H. Kim, H. J. Lee, J. S. Ahn, N. J. Hur, T. W. Noh, M. S. Kim, J. -G. Park. 1998-09-07. Optical Investigations of La_{7/8}Sr_{1/8}MnO_3. https://doi.org/10.1103/physrevb.59.3793

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