Optical and magneto-optical differential spectroscopy of a ZnCdSe-ZnSe superlattice
| Autor: | M. Averous, Roger Aulombard, A. Abounadi, D. Coquillat, J. Calas, A. Rajira, Thierry Cloitre |
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| Rok vydání: | 1997 |
| Předmět: |
Valence (chemistry)
Materials science Zeeman effect Photoluminescence Mechanical Engineering Superlattice Binding energy Dichroism Condensed Matter Physics Molecular physics symbols.namesake Crystallography Mechanics of Materials symbols General Materials Science Metalorganic vapour phase epitaxy Spectroscopy |
| Zdroj: | Materials Science and Engineering: B. 43:129-132 |
| ISSN: | 0921-5107 |
| Popis: | We report on optical and magneto-optical studies of a ZnCdSe-ZnSe strained layer superlattice. This structure was grown by metal-organic vapour phase epitaxy (MOVPE) and consisted of 40 periods of 72 A ZnCdSe layer and 49 A ZnSe layer with cadmium composition equal to 4%. Photoluminescence, reflectivity and magnetocircular dichroism experiments at 2 K were used to identify e 1 -hh 1 and e 1 -lh 1 excitonic transitions. By comparing these experimental transitions with the calculated ones, we have determined the valence and the conduction band offsets. In these calculations, we have included values of the binding energies related to the different transitions. These binding energies are calculated within the formalism of fractional dimensional space. Zeeman splitting of ¦ ± 3/2, ± 1/2〉 and ¦ ± 1/2, ∓1/2〉 transitions are calculated at 5.5 T and the corresponding effective g -values g 3/2 and g 1/2 are deduced. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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