
pmid: 10003622
The dielectric response functions of single-crystal PdO parallel and perpendicular to the c axis are obtained from 1.6 to 5.8 eV by analysis of ellipsometric data. Strong anisotropy is observed. Both e ∥(ω) and e ⊥(ω) show a Lorentz-oscillator-type resonance near 2.5 eV, but the strength of this oscillator for e ∥ is about twice as big as that for e ⊥. A simple classical model is used to calculate the Raman excitation profile associated with this oscillator. The result is in good agreement with recent resonance Raman data on PdO
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