Abstract
An anomalous splitting of theJ=0→J=1 multiplet transition has been observed by magnetic neutron scattering from intermediate valent Sm0.75Y0.25S. The splitting is discussed in terms of a resonant coupling of optical phonons to the magnetic exciton built from the localizedJ=0→J=1 multiplet transition by magnetic intersite coupling.
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Holland-Moritz, E., Zirngiebl, E. & Blumenröder, S. Resonant coupling of optical phonons to J-multiplet excitations in intermediate valent Sm0.75Y0.25S. Z. Physik B - Condensed Matter 70, 395–398 (1988). https://doi.org/10.1007/BF01317247
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DOI: https://doi.org/10.1007/BF01317247