Abstract
We have investigated the effect of a magnetic field and the degree of filling and width of the band on the scattering processes on the basis of the Hubbard method. The electrical conductivity tensor was calculated with account taken of damping processes. It is shown that the relaxation times depend essentially on the electron spin orientations. Theordering of the electron spins under the influence of the external magnetic field leads to an increase of the electrical conductivity tensor, that in turn leads to a negative magnetoresistance.
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Translated from Izvestiya Vysshikh Uchebnykh Zavedenii, Fizika, No. 6, pp. 65–69, June, 1976.
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Didora, T.D., Nitsovich, V.M. Effect of scattering processes on the dynamics of electrons in narrow energy bands. Soviet Physics Journal 19, 736–740 (1976). https://doi.org/10.1007/BF00943471
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DOI: https://doi.org/10.1007/BF00943471