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

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

arxiv: cond-mat/9809107 · v1 · submitted 1998-09-07 · ❄️ cond-mat.str-el

Optical Investigations of La_(7/8)Sr_(1/8)MnO₃

J. H. Jung , K. H. Kim , H. J. Lee , J. S. Ahn , N. J. Hur , T. W. Noh , M. S. Kim , J.-G. Park This is my paper

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keywords temperaturedependentopticalphasephononpolaronspectratransition

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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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Optical Investigations of La_(7/8)Sr_(1/8)MnO₃

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