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Consideration of different problems of physical kinetics shows that non-equilibrium distribution function of band carriers and, consequently, kinetic coefficients significantly depend on the specific shape of bands and mutual interaction of carriers. The most impressive results are related with interband scattering of mobile particles belonging to many-valley systems. Especially essential process of e-e-interaction is peculiar for the so-called half-metals (wolfram, bismuth, molibden, indium and many others). [ABSTRACT FROM AUTHOR]

Consideration of different problems of physical kinetics shows that nonequilibrium distribution function of band carriers and, consequently, kinetic coefficients significantly depend on the specific shape of bands and mutual interaction of carriers. The most impressive results are related with interband scattering of mobile particles belonging to many-valley systems. [ABSTRACT FROM AUTHOR]

Consideration of different problems of physical kinetics shows that obtained non-equilibrium distribution function and following kinetic coefficients calculated are significantly dependent on choice of approach to approximate solution of kinetic equation. Therefore, in real practice any separate popular way of solution cannot be confidently considered as a reliable result. Here, several approaches are used, and the obtained different distribution functions and mobility have been compared. [ABSTRACT FROM AUTHOR]

The kinetic equation is turned out in the form that contains collision integral obviously dependent on the value of external electric and magnetic fields. The correspondent calculation of kinetic coefficients shows that for the case considered here they depend evidently on the ratio of average deBroighle wavelength and free-path length. Just here, the real possibility appears to reasonably separate physical kinetics by the classic and non-classic (quantum) ones. [ABSTRACT FROM AUTHOR]

Conductivity of charged band carriers is considered for the case when collision integral evidently depends on electric field. This dependence for the case of scattering by charged impurities results in decrease of carrier conductivity. [ABSTRACT FROM AUTHOR]