Matches in SemOpenAlex for { <https://semopenalex.org/work/W2028503606> ?p ?o ?g. }
- W2028503606 abstract "We study the interplay between Coulomb blockade and the Kondo effect in quantum dots. We use a self-consistent scheme which describes mesoscopic devices in terms of a collective phase variable (slave rotor) and quasiparticle degrees of freedom. In the strong Coulomb blockade regime, we recover the description of metallic islands in terms of a phase only action. For a dot with well-separated levels, our method leads to the Kondo effect. We identify the regime where a crossover between the Coulomb blockade regime at high temperatures and the formation of a Kondo resonance at lower temperature takes place. In addition, we find that for a dot with many overlapping resonances, an {it inverse crossover} can take place. A Kondo resonance which involves many levels within the dot is first formed, and this coherent state is suppressed by correlation effects at lower temperatures. A narrower Kondo resonance, due to a single level in the dot can emerge at even lower temperatures." @default.
- W2028503606 created "2016-06-24" @default.
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- W2028503606 date "2003-12-15" @default.
- W2028503606 modified "2023-10-03" @default.
- W2028503606 title "Coherence and Coulomb blockade in single-electron devices: A unified treatment of interaction effects" @default.
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- W2028503606 doi "https://doi.org/10.1103/physrevb.68.245311" @default.
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