Universal dephasing rate due to diluted Kondo impurities

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dc.creatorMicklitz, T.
dc.creatorAltland, A.
dc.creatorCosti, T. A.
dc.creatorRosch, A.
dc.date2005-09-22
dc.date2006-05-18
dc.date.accessioned2026-07-07T06:41:51Z
dc.date.available2026-07-07T06:41:51Z
dc.descriptionWe calculate the dephasing rate due to magnetic impurities in a weakly disordered metal as measured in a weak localization experiment. If the density n_S of magnetic impurities is sufficiently low, the dephasing rate 1/tau_phi is a universal function, 1/tau_phi = (n_S/nu) f(T/T_K), where T_K is the Kondo temperature and nu the density of states. We show that inelastic vertex corrections with a typical energy transfer Delta E are suppressed by powers of 1/(tau_phi Delta E) proportional to n_S. Therefore the dephasing rate can be calculated from the inelastic cross section proportional to pi nu Im T- |pi nu T|^2, where T is the T-matrix which is evaluated numerically exactly using the numerical renormalization group.
dc.description4 pages, 3 figures; minor modifications, version accepted by PRL
dc.identifierhttps://arxiv.org/abs/cond-mat/0509583
dc.identifierhttp://arxiv.org/abs/cond-mat/0509583
dc.identifierPhys. Rev. Lett. 96, 226601 (2006)
dc.identifierdoi:10.1103/PhysRevLett.96.226601
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/101819
dc.subjectMesoscale and Nanoscale Physics
dc.subjectStrongly Correlated Electrons
dc.titleUniversal dephasing rate due to diluted Kondo impurities
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