Leading temperature dependence of the conductance in Kondo-correlated quantum dots. (20th March 2018)

• Record Type: Journal Article
• Authors: Aligia, A A
• Is Part Of: Journal of physics. Volume 30:Number 15(2018)
• Publication Date: 2018-03-20
• Subjects: Kondo effect -- quantum dots -- Anderson model -- renormalized perturbation theory; Condensed matter -- Periodicals; Matière condensée -- Périodiques; Vaste stoffen; Vloeistoffen; Natuurkunde; Electronic journals; Computer network resources; 530.4105
• DOI: 10.1088/1361-648X/aab45b
• Languages: English
• ISSNs: 0953-8984

Abstract

Abstract: Using renormalized perturbation theory in the Coulomb repulsion, we derive an analytical expression for the leading term in the temperature dependence of the conductance through a quantum dot described by the impurity Anderson model, in terms of the renormalized parameters of the model. Taking these parameters from the literature, we compare the results with published ones calculated using the numerical renormalization group obtaining a very good agreement. The approach is superior to alternative perturbative treatments. We compare in particular to the results of a simple interpolative perturbation approach.