MAGNETOCONDUCTIVITY OF QUANTUM WIRES WITH ELASTIC AND INELASTIC-SCATTERING

Article

关键词: DIMENSIONAL ELECTRON-GAS;    GAAS-GAALAS HETEROSTRUCTURES;    MAGNETOPHONON RESONANCES;    MAGNETIC-FIELD;    TRANSPORT;    MOBILITY;    MAGNETOTRANSPORT;    SUPPRESSION;    TRANSITION;    SYSTEMS;   

DOI  :  10.1103/PhysRevB.48.11144

来源: SCIE

【 摘 要 】

We use a Boltzmann equation to determine the magnetoconductivity of quantum wires. The presence of a confining potential in addition to the magnetic field removes the degeneracy of the Landau levels and allows one to associate a group velocity with each single-particle state. The distribution function describing the occupation of these single-particle states satisfies a Boltzmann equation, which may be solved exactly in the case of impurity scattering. In the case where the electrons scatter against both phonons and impurities we solve numerically-and in certain limits analytically-the integral equation for the distribution function and determine the conductivity as a function of temperature and magnetic field. The magnetoconductivity exhibits a maximum at a temperature, which depends on the relative strength of the impurity and electron-phonon scattering and shows oscillations when the Fermi energy of the magnetic field is varied.

【 授权许可】

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