Abstract
The effect of γ-irradiation on the thermal electromotive force (emf) of hot carriers in Cd x Hg1 − x Te (0.25 ≤ x ≤ 0.95) single crystals has been investigated in weak and strong electric fields. It has been shown that in relatively low fields in which the charge carriers are still warm, the relationship |U T | ∼ E 2 is observed because of the dominance of scattering by acoustic vibrations of the lattice with the increasing electric field strength, whereas the dependence of |U T | on E turns to be linear with a further increase of the electric field when the charge carriers become hot. The thermal emf retains its sign in the γ-irradiated crystals. However, there are significant changes in pattern of the field and temperature dependences of |U T |, with the dependence of |U T on E being nonmonotonic at high doses.
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Original Russian Text © Yu.G. Nurullaev, B.S. Barkhalov, S.K. Novruzova, 2013, published in Khimiya Vysokikh Energii, 2013, Vol. 47, No. 3, pp. 223–225.
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Nurullaev, Y.G., Barkhalov, B.S. & Novruzova, S.K. Thermal electromotive force of hot carriers in γ-irradiated single crystals of cadmium mercury tellurides. High Energy Chem 47, 127–129 (2013). https://doi.org/10.1134/S0018143913030107
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DOI: https://doi.org/10.1134/S0018143913030107