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- W2049968483 abstract "A solution of a kinetic equation for the one-particle density matrix is obtained for deformation potential scattering. Expressions for conductivity tensor components as sums over states in a magnetic field are derived. It is shown that without a magnetic field they do not differ from classical expressions. In a weak magnetic field, the magnetoresistance of a nondegenerate electron gas is positive for high electron mobility and negative for low mobility. For intermediate mobility, its sign changes with the magnetic-field increase. The magnetoresistance of a degenerate electron gas is nonzero. In a quantizing magnetic field, the conductivity oscillates as a function of the magnetic field. The oscillation amplitude and the mean magnetoresistance value increase with the magnetic field or mobility growth." @default.
- W2049968483 created "2016-06-24" @default.
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- W2049968483 date "2003-02-06" @default.
- W2049968483 modified "2023-10-18" @default.
- W2049968483 title "Density matrix approach to electron transport in an arbitrary magnetic field and negative magnetoresistance" @default.
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- W2049968483 doi "https://doi.org/10.1103/physrevb.67.085201" @default.
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