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

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

1998-09-07

arxiv.org/abs/cond-mat/9809107v1

Physics

Condensed Matter

Strongly Correlated Electrons

Revtex 12 pages, 5 figures, Submitted to Phys. Rev. B

Scientific paper

10.1103/PhysRevB.59.3793

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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