Abstract
An effect of electron correlation on an angular dependence of magnetoconductivity is investigated in quasi-one-dimensional organic conductors. The effect is studied on the basis of momentum dependence of both quasi-particle's lifetime and velocity near SDW. We find that the momentum dependence of quasi-particle's lifetime mainly governs the angular dependence of one-dimensional axis magnetoconductivity. On the other hand, the change of the momentum dependence of velocity originating from electron correlation gives the dominant effects to angular dependence of the interchain axis magnetoconductivity. These effects of electron correlation are explained from the connection of the momentum dependence of lifetime and velocity with the momentum dependence of commensurate orbital on Fermi surface in magnetic fields.
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