Interaction corrections at intermediate temperatures: dephasing time

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 ${\tau }_{\varphi }(T)$ between the high temperature, $1/{\tau }_{\varphi }\simeq T^2\ln T$, and the low temperature $1/{\tau }_{\varphi }\simeq T$ behaviors. The prefactors in these dependences are not universal, but are determined by the Fermi liquid constant characterising the spin exchange interaction.

4 pages, to appear in PRB, minor errors corrected, added references

References in corpus (4)

• Interaction corrections at intermediate temperatures: I. Longitudinal conductivity and kinetic equation
• Interaction corrections at intermediate temperatures: magneto-resistance in parallel field
• Interaction corrections to the Hall coefficient at intermediate temperatures
• Inelastic Scattering Time for Conductance Fluctuations

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