Dynamics of a tunneling magnetic impurity: Kondo effect induced incoherence

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dc.creatorBorda, L.
dc.creatorZarand, G.
dc.date2001-05-29
dc.date.accessioned2026-07-07T02:41:34Z
dc.date.available2026-07-07T02:41:34Z
dc.descriptionWe study how the formation of the Kondo compensation cloud influences the dynamical properties of a magnetic impurity that tunnels between two positions in a metal. The Kondo effect dynamically generates a strong tunneling impurity-conduction electron coupling, changes the temperature dependence of the tunneling rate, and may ultimately result in the destruction of the coherent motion of the particle at zero temperature. We find an interesting two-channel Kondo fixed point as well for a vanishing overlap between the electronic states that screen the magnetic impurity. We propose a number of systems where the predicted features could be observed.
dc.description4 pages, 3 figures, ReVTeX
dc.identifierhttps://arxiv.org/abs/cond-mat/0105548
dc.identifierhttp://arxiv.org/abs/cond-mat/0105548
dc.identifierPhys. Rev. Lett. 88, 247203 (2002)
dc.identifierdoi:10.1103/PhysRevLett.88.247203
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/17792
dc.subjectStrongly Correlated Electrons
dc.titleDynamics of a tunneling magnetic impurity: Kondo effect induced incoherence
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