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Magnetic Field Dependence of Dephasing Rate due to Diluted Kondo Impurities

T. Micklitz·T. A. Costi·A. Rosch
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Abstract

We investigate the dephasing rate, 1/tau_phi, of weakly disordered electrons due to scattering from diluted dynamical impurities. Our previous result for the weak-localization dephasing rate is generalized from diluted Kondo impurities to arbitrary dynamical defects with typical energy transfer larger than 1/tau_phi. For magnetic impurities, we study the influence of magnetic fields on the dephasing of Aharonov-Bohm oscillations and universal conductance fluctuations both analytically and using the numerical renormalization group. These results are compared to recent experiments.

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T. Micklitz, T. A. Costi, A. Rosch. 2007-01-31. Magnetic Field Dependence of Dephasing Rate due to Diluted Kondo Impurities. https://doi.org/10.1103/physrevb.75.054406

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