Abstract
Splitting and renormalisation of doubly-degenerate optical phonons in Ce c La1−c F3 single crystals (0≦c≦1) has been observed in Raman-scattering experiments. The effects depend on the 4f-electron concentrationc, the magnetic field and temperature. A quantitative interpretation is given using a Jahn-Teller type Hamiltonian with only one phenomenological coupling constant.
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Ahrens, K. The magnetoelastic interaction of optical phonons in Ce c La1−c F3 single crystals. Z. Physik B - Condensed Matter 40, 45–54 (1980). https://doi.org/10.1007/BF01295069
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DOI: https://doi.org/10.1007/BF01295069