Publicação: Universal zero-bias conductance for the single-electron transistor
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Amer Physical Soc
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Resumo
The thermal dependence of the zero-bias conductance for the single electron transistor is the target of two independent renormalization-group approaches, both based on the spin-degenerate Anderson impurity model. The first approach, an analytical derivation, maps the Kondo-regime conductance onto the universal conductance function for the particle-hole symmetric model. Linear, the mapping is parametrized by the Kondo temperature and the charge in the Kondo cloud. The second approach, a numerical renormalization-group computation of the conductance as a function the temperature and applied gate voltages offers a comprehensive view of zero-bias charge transport through the device. The first approach is exact in the Kondo regime; the second, essentially exact throughout the parametric space of the model. For illustrative purposes, conductance curves resulting from the two approaches are compared.
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Anderson model, electric admittance, Kondo effect, renormalisation, single electron transistors
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Inglês
Como citar
Physical Review B. College Pk: Amer Physical Soc, v. 80, n. 23, p. 22, 2009.
