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Interference effects in the Coulomb blockade regime: Current blocking and spin preparation in symmetric nanojunctions

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Donarini, Andrea ; Begemann, Georg ; Grifoni, Milena
Date of publication of this fulltext: 12 Nov 2010 08:31


We consider nanojunctions in the single-electron tunneling regime which, due to a high degree of spatial symmetry, have a degenerate many-body spectrum. As a consequence, interference phenomena which cause a current blocking can occur at specific values of the bias and gate voltage. We present here a general formalism to give necessary and sufficient conditions for interference blockade also in ...


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