Thermally stimulated currents and instabilities of the photoresponse in PbTe(In) alloys at low temperaturesстатья
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Дата последнего поиска статьи во внешних источниках: 18 июля 2013 г.
Аннотация:The photoelectric properties of Pb1-X-YSnXGeYTe(In) epitaxial films (0.06<X<0.2, 0.08<Y<0.12) with In concentrations of 0.5-1 at. % on BaF 2-substrates are investigated in the temperature range 4.2 K<T<30 K. Thermally stimulated single current (TSC) peaks are observed at T similar to 6-14 K. It is established that a magnetic field up to 5 T slightly shifts the peaks essentially without affecting their profile. The TSC peaks and the electrothermal instabilities observed at T<15 K are attributed to the excitation of electrons from metastable states into the conduction band. (C) 1999 American Institute of Physics. [S1063-7826(99)00201-X].