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Coulomb Blockade Resonances in Quantum Wires

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 نشر من قبل Toni Ramsak
 تاريخ النشر 1999
  مجال البحث فيزياء
والبحث باللغة English
 تأليف T. Rejec




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The conductance through a quantum wire of cylindrical cross section and a weak bulge is solved exactly for two electrons within the Landauer-Buettiker formalism. We show that this open quantum dot exhibits spin-dependent Coulomb blockade resonances resulting in two anomalous structure on the rising edge to the first conductance plateau, one near 0.25(2e^2/h), related to a singlet resonance, and one near 0.7(2e^2/h), related to a triplet resonance. These resonances are generic and robust, occurring for other types of quantum wire and surviving to temperatures of a few degrees.



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