Light scattering in metallic compounds and thin supported layers
| Autor: | Burkard Hillebrands, E. Zirngiebl, R. Mock, G. Güntherodt, S. Blumenröder |
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| Rok vydání: | 1985 |
| Předmět: |
Materials science
Phonon scattering Condensed matter physics Scattering business.industry Phonon Condensed Matter Physics Small-angle neutron scattering Light scattering Electronic Optical and Magnetic Materials symbols.namesake X-ray Raman scattering Optics Brillouin scattering symbols Condensed Matter::Strongly Correlated Electrons General Materials Science Rayleigh scattering business |
| Zdroj: | Zeitschrift f�r Physik B Condensed Matter. 60:423-432 |
| ISSN: | 1434-6036 0722-3277 |
| DOI: | 10.1007/bf01304464 |
| Popis: | Recent progress of light scattering in metals is reviewed by selected highlights: Raman scattering in CeB6 has established a new crystalline electric field (CEF) level scheme with aΓ 8 ground state. The resonant CEF-phonon coupling has been identified in CeAl2. The ionic model description of intermediate valence of rare earth (RE) ions in metals could directly be proved by Raman spectroscopy in EuPd2Si2. Brillouin scattering from elastic surface wave excitations of bulk metals or supported thin layers can now be used for the reliable determination of their elastic constants. For very thin metallic layers light scattering has been very successful in observing the dispersion of standing spin waves and their elastic analogue, the Sezawa waves. From the standing spin waves the exchange constant can be determined most directly. The investigation of Au clusters deposited on NaCl has revealed a new localized acoustic surface mode (“cluster mode”). Its frequency crosses with increasing Au deposition the frequency of the transverse acoustic phonon mode of the substrate at the percolation threshold. |
| Databáze: | OpenAIRE |
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