Effects of Magnetic Fields on Inelastic Scattering Time in Two-Dimensional Weak Localization

抄録

Effects of magnetic fields on the inelastic scattering time, τ_ε, are examined in two-dimensional weakly localized regime by extending the calculation of Fukuyama and Abrahams. In spite of the strong field dependence of τ_ε, the use of the constant τ_ε⁰, the zero field value, is verified in the expression of the magnetoresistance, which have been applied successfully. Higher order interaction effects are also investigated in the same framework and are found not to affect the conclusion in an essential way.