Anti-Kondo resonance in transport through a quantum wire with a side-coupled quantum dot

Details Anti-Kondo resonance in transport through a quantum wire with a side-coupled quantum dot Anti-Kondo resonance in transport through a quantum wire with a side-coupled quantum dot

2000-09-15

arxiv.org/abs/cond-mat/0009235v1

Phys. Rev. B 63, 113304 (2001)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

4 pages Revtex, 3 eps figures

Scientific paper

10.1103/PhysRevB.63.113304

An interacting quantum dot side-coupled to a perfect quantum wire is studied. Transport through the quantum wire is investigated by using an exact sum rule and the slave-boson mean field treatment. It is shown that the Kondo effect provides a suppression of the transmission due to the destructive interference of the ballistic channel and the Kondo channel. At finite temperatures, anti-resonance behavior is found as a function of the quantum dot level position, which is interpreted as a crossover from the high temperature Kondo phase to the low temperature charge fluctuation phase.

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