Interaction corrections at intermediate temperatures: dephasing time

Details Interaction corrections at intermediate temperatures: dephasing time Interaction corrections at intermediate temperatures: dephasing time

2002-01-22

arxiv.org/abs/cond-mat/0201379v2

Physics

Condensed Matter

Disordered Systems and Neural Networks

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

Scientific paper

10.1103/PhysRevB.65.180202

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 ${\tau_\phi(T)}$ between the high temperature, $1/\tau_\phi \simeq T^2 \ln T$, and the low temperature $1/\tau_\phi \simeq T$ 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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