AC transport through a quantum dot: from Kondo to Coulomb-blockade behaviour |
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Authors: | Rosa L pez, Ram n Aguado, Gloria Platero,Carlos Tejedor |
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Affiliation: | Rosa López, Ramón Aguado, Gloria Platero,Carlos Tejedor |
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Abstract: | We analyze the conductance () of a quantum dot (QD) in an AC potential at finite temperature. The Friedel–Langreth sum rule (FLSR) is generalized to include the effect of an AC potential and finite T. We have solved the Anderson Hamiltonian by means of a self-consistent procedure which fulfills the generalized FLSR. New features are found in the density of states (DOS) and in when an AC voltage is applied. Our model describes the effect of an AC potential on the transition from Kondo regime to a Coulomb-blockade behaviour as T increases. |
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Keywords: | Quantum dots Kondo regime Coulomb blockade |
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