Far infrared properties of iron doped single crystal PbTe
AuthorsNikolić, Pantelija M.
Nikolić, Maria Vesna
Blagojević, Vladimir D.
Vujatović, Stevan S.
Savić, Slavica M.
Article (Published version)
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Far infrared reflectivity spectra of single crystal PbTe samples doped with 0.2 at% Fe were measured in the temperature range between 10 K and 300 K. These spectra show very sharp and narrow dips below 120 cm-1. The experimental data were numerically analyzed using a fitting procedure based on the plasmon-phonon interaction model. Two local modes were observed. The first one was noted between 130 cm-1 and 170 cm-1 depending on the temperature and the second more frequency stable one was noted at about 230 cm-1.
Keywords:far-infrared reflectivity / plasmon-phonon interaction / semiconductors
Source:Journal of Optoelectronics and Advanced Materials, 2008, 10, 1, 145-148
- Măgurele : National Institute of Research and Development for Optoelectronics