| Autor: |
Castaing, O., Benhlal, J. T., Granger, R., Triboulet, R., Castaing, O., Benhlal, J. T., Granger, R., Triboulet, R. |
| Zdroj: |
Journal de Physique I; July 1996, Vol. 6 Issue: 7 p907-923, 17p |
| Abstrakt: |
The dielectric function ϵr+ iϵiin Hg1-xZnxTe is found, for the first time, at 293 K. It is deduced from spectroscopic ellipsometry measurements for the entire composition range and for photon energies ranging from 0.75 eV to 5.7 eV. A detailed analysis of the chemical treatments leading to the best surfaces which correspond to the highest values of ϵiat the E2peak is presented. The oxydation of the surface after the last stripping is also studied. The pseudodielectric function is analysed for the critical point model. The variation, with x of the parameters describing the main critical transitions E0,E0+ Δ0, E1,E1+ Δ1and E2are obtained. The results are discussed in relation to the band structure and to the properties of these compounds. |
| Databáze: |
Supplemental Index |
| Externí odkaz: |
|
