Vibrational line shapes in the amalgamated limit: (para-D2)x(ortho-D2)1−xmixed crystals
| Autor: | Dirk Schoemaker, D. L. Huber, August Bouwen, A. Boukahil, De Kinder J |
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| Rok vydání: | 1994 |
| Předmět: | |
| Zdroj: | Physical Review B. 49:12762-12766 |
| ISSN: | 1095-3795 0163-1829 |
| Popis: | The ${\mathrm{D}}_{2}$ vibrons have been studied by high-resolution Raman scattering in mixed crystals of (p-${\mathrm{D}}_{2}$)x(o-${\mathrm{D}}_{2}$)1-x. The o-${\mathrm{D}}_{2}$ and p-${\mathrm{D}}_{2}$ vibrational transitions are found to overlap. Line shapes calculated by the coherent potential approximation are in good qualitative agreement with the experimental data. The linewidth of the o-${\mathrm{D}}_{2}$ transition is much larger than the linewidth of the p-${\mathrm{H}}_{2}$ transition in (o-${\mathrm{H}}_{2}$${)}_{\mathit{x}}$(p-${\mathrm{H}}_{2}$${)}_{1\mathrm{\ensuremath{-}}\mathit{x}}$ mixed crystals with comparable J=1 concentrations. Possible explanations for this difference are discussed. |
| Databáze: | OpenAIRE |
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