| Autor: |
De Silans, Thierry Passerat, Maurin, Isabelle, Segundo, Pedro Chaves De Souza, Saltiel, Solomon, Gorza, Marie-Pascale, Ducloy, Martial, Bloch, Daniel, Meneses, Domingo De Sousa, Echegut, Patrick |
| Rok vydání: |
2009 |
| Předmět: |
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| Zdroj: |
Journal of Physics : Condensed Matter 21 (2009) 255902 |
| Druh dokumentu: |
Working Paper |
| DOI: |
10.1088/0953-8984/21/25/255902 |
| Popis: |
The temperature behaviour in the range 22\degree C to 500\degree C of the dielectric permittivity in the infrared range is investigated for CaF2, BaF2 and Al2O3 through reflectivity measurements. The dielectric permittivity is retrieved by fitting reflectivity spectra with a model taking into account multiphonon contributions. The results extrapolated from the measurements are applied to predict a temperature-dependent atom-surface van der Waals interaction. We specifically consider as the atom of interest Cs (8P3/2), the most relevant virtual couplings of which, fall in the range of thermal radiation and are located in the vicinity of the reststrahlen band of fluoride materials. |
| Databáze: |
arXiv |
| Externí odkaz: |
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