The resonant coupling of the Γ+5 phonon to the Γ7-Γ8 CEF excitations in CeAl2 is probed by Raman scattering via the simultaneous observation of the renormalized (Γ̃+6) phonon and the phonon bound state. This represents the "phononic analogue" to the instantaneous observation of electronic charge fluctuations by XPS in intermediate valence compounds.
All Science Journal Classification (ASJC) codes
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics