Galvanomagnetic and optical properties of chromium doped PbTeстатья
Статья опубликована в высокорейтинговом журнале
Информация о цитировании статьи получена из
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Дата последнего поиска статьи во внешних источниках: 2 июня 2014 г.
Аннотация:Behavior of PbTe samples doped with different amount of Cr, prepared by two methods of synthesis is
analyzed using galvanomagnetic measurements and far-infrared spectroscopy. The far-infrared reflectivity
spectra of PbTe(Cr) alloys were measured in the 50–650 cm1 spectral range at different temperatures
and analyzed using a numerical fitting procedure based on the plasmon–phonon interaction model. The
two local Cr modes at about 260 cm1 and 480 cm1 together with the strong plasmon–phonon coupling
are observed. The persistent photoconductivity is registered. Using results of galvanomagnetic measurements
the carrier concentrations is determined and hence we obtained the Fermi level temperature
dependence.