Band of local states in Pb1-xSnxSe (x=0.125) alloy irradiated by electrons

Temperature dependences of specific resistance and Hall coefficient (4.2≤T≤300 K) in weak magnetic fields (B≤0.04T) as well as Shubnikov-de-Haas effects (T=4.2 K, B<7 T) in n-type Pb1-xSnxSe (x=0.125) alloy monocrystalline samples irradiated with fast electrons (Tirr. ≅ 300 K, E=6 MeV, φ≤4.1x1017 cm-2) at P≤18 kbar pressures are investigated. Electron concentration stabilization effect at φ>1017 cm-2 and metal-dielectric transition under the pressure effect are detected in the samples irradiated. It is shown that all the results obtained can be explained within the framework of a model assuming the occurrence of local states which are possibly linked with selenium vacancies under irradiation of a zone the positron of which in relation to L6- term does not change under hydrostatic compression