Interaction corrections at intermediate temperatures: dephasing time
B. N. Narozhny, Gábor Zala, I. L. Aleiner
Abstract
We calculate the temperature dependence of the weak localization correction in a two dimensional system at arbitrary relation between temperature, T and the elastic mean free time. We describe the crossover in the dephasing time τϕ(T) between the high temperature, 1/τϕ T2 T, and the low temperature 1/τϕ T behaviors. The prefactors in these dependences are not universal, but are determined by the Fermi liquid constant characterising the spin exchange interaction.
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