Thermally stimulated currents and instabilities of the photoresponse in PbTe(In) alloys at low temperatures
Б.А. АкимовM. V. Lomonosov Moscow State University, 119899, Moscow, RussiaV. A. BogoyavlenskiiM. V. Lomonosov Moscow State University, 119899, Moscow, RussiaL. I. RyabovаM. V. Lomonosov Moscow State University, 119899, Moscow, RussiaVyacheslav N. Vasil’kovMoscow State UniversityV.E. SlynkoM. V. Lomonosov Moscow State University,, Moscow,, Russia
1999en
ABI
Аннотация
The photoelectric properties of Pb1−X−Y SnXGeYTe(In) epitaxial films (0.06<X<0.2, 0.08<Y<0.12) with In concentrations of 0.5–1 at.% on BaF2 substrates are investigated in the temperature range 4.2 K<T<30 K. Thermally stimulated single current (TSC) peaks are observed at T∼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.
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