Is the Multichannel Kondo Model Appropriate to Describe the Single Electron Transistor?

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dc.creatorZarand, Gergely
dc.creatorZimanyi, Gergely T.
dc.creatorWilhelm, Frank
dc.date2000-03-01
dc.date.accessioned2026-07-07T02:36:55Z
dc.date.available2026-07-07T02:36:55Z
dc.descriptionWe investigate the low-temperature dynamics of single electron boxes and transistors close to their degeneracy point using renormalization group methods. We show that intermode scattering is a relevant perturbation and always drives the system to the two-channel Kondo fixed point, where the two channels correspond to the real spins of the conduction electrons. However, the crossover temperature T^*, below which Matveev's two-channel Kondo scenario [K.A. Matveev, Phys. Rev. B 51, 1743 (1995)] develops decreases exponentially with the number of conduction modes in the tunneling junctions and is extremely small in most cases. Above T^* the 'infinite channel model' of Ref.{onlinecite{Schoen}} turns out to be a rather good approximation. We discuss the experimental limitations and suggest a new experimental setup to observe the multichannel Kondo behavior.
dc.description8 PRB pages, with 5 eps figures, REVTeX
dc.identifierhttps://arxiv.org/abs/cond-mat/0003013
dc.identifierhttp://arxiv.org/abs/cond-mat/0003013
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/16104
dc.subjectStrongly Correlated Electrons
dc.titleIs the Multichannel Kondo Model Appropriate to Describe the Single Electron Transistor?
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