FAR-INFRARED STUDY OF LOCALIZED STATES IN IN-DOPED PB0.75SN0.25TE SINGLE-CRYSTALSстатья
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: 19 июля 2013 г.
Аннотация:Far-infrared reflectivity spectra of a 1.2 at. % In-doped Pb0.75Sn0.25Te single crystal and galvanomagnetic data are presented. The infrared spectra were analyzed with use of a fitting procedure based on the plasmon-phonon interaction model. The plasma frequency was found to decrease at cooling from 300 to 30 K and a sharp drop in omega-p was observed between 20 and 10 K. In addition, at T less-than-or-equal-to 20 K, a new structure on the reflectivity spectra is clearly observable. It may be associated with localized states in In-doped Pb0.75Sn0.25Te.