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Far-infrared spectroscopy of localized states in indium doped PbTe and Pb(1-x)A(x)Te (A(x)=Mn-0.017; Sn-0.18) alloysстатья
Информация о цитировании статьи получена из
Scopus,
Web of Science
Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 18 июля 2013 г.
- Авторы: Romcevic N., Popovic Z.V., Khokhlov D.R., Konig W.
- Журнал: Infrared Physics and Technology
- Том: 38
- Номер: 2
- Год издания: 1997
- Издательство: Elsevier BV
- Местоположение издательства: Netherlands
- Первая страница: 117
- Последняя страница: 122
- DOI: 10.1016/S1350-4495(96)00042-4
- Аннотация: Far-infrared reflection spectra of indium doped PbTe single crystal as well as of Pb(1-x)A(x)Te alloys (A(x) = Mn-0.017; Sn-0.18) in the temperature range between 10 and 300 K are presented. Analysis of the spectra was made by a fitting procedure based on the model of coupled oscillators. At temperatures below T = 200 K, two additional modes appear, along with the modes which describe strong plasmon-LO phonon coupling. The first mode, at about 122 cm(-1), is a local impurity mode of indium which represents a population of metastable states due to the transfer of electrons from two-electron to one-electron metastable impurity states. The second mode at about 488 cm(-1) we believe to appear as a consequence of the electron transfer from a stable impurity two-electron state to the conduction band.
- Добавил в систему: Хохлов Дмитрий Ремович