Zero-Bias Conductance Through Side-Coupled Double Quantum DotsReportar como inadecuado



 Zero-Bias Conductance Through Side-Coupled Double Quantum Dots


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Low temperature zero-bias conductance through two side-coupled quantum dots is investigated using Wilsons numerical renormalization group technique. A low-temperature phase diagram is computed. Near the particle-hole symmetric point localized electrons form a spin-singlet associated with weak conductance. For weak inter-dot coupling we find enhanced conductance due to the two-stage Kondo effect when two electrons occupy quantum dots. When quantum dots are populated with a single electron, the system enters Kondo regime with enhanced conductance. Analytical expressions for the width of the Kondo regime and the Kondo temperature in this regime are given.



Autor: J. Bonca; R. Zitko

Fuente: https://archive.org/







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