Abstract
The results of studying the frequency and temperature dependences of the ac electrical conductivity of FeGaInSe4 crystals are presented. It is found that the systematic feature σ ∝ f s (0.1 ≤ s ≤ 1.0) is satisfied for the electrical conductivity at the temperatures under study in the frequency range f = 5 × 104–106 Hz. The activation energies are determined from the temperature dependences of the conductivity. It is shown that the frequency dependence of the conductivity in an FeGaInSe4 crystal can be explained using the multiplet model, hence, the conductivity in these crystals is controlled by the band-hopping mechanism.
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Translated by A. Kazantsev
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Niftiyev, N.N., Mammadov, F.M. & Muradov, M.B. AC Electrical Conductivity of FeGaInSe4. Semiconductors 54, 627–629 (2020). https://doi.org/10.1134/S1063782620060123
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DOI: https://doi.org/10.1134/S1063782620060123