Abstract
We theoretically investigate the Kondo effect of a three-terminaltransport quantum dot (QD) embedded in an Aharonov–Bohm ring in theKondo regime by means of the one-impurity Anderson Hamiltonian. TheHamiltonian is solved by means of the slave-boson mean-field theory. Wefind that in this system, the Kondo effect depends sensitively on theparity and size of the ring; the Kondo screening cloud can be tuned bytuning the coupling strength of the reservoir-dot. Thus this modelmight be a candidate for future device applications.
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