The eigenstates and the scattering transmission for two interacting electrons are found exactly for I quantum dots, including the hybridization with the states on the leads. The results imply limitations on the validity of the Coulomb blockade picture. The ground states for I = 1, 2 on a one-dimensional chain (modelling single and double quantum dots) exhibit quantum delocalization and magnetic transitions. The effective transmission T of two interacting electrons through one impurity (I = 1) is enhanced by a renormalization of the repulsive interaction, when one of the electrons is captured in a strongly localized state.
|Number of pages||6|
|Journal||Annalen der Physik|
|State||Published - 1 Dec 1999|
|Event||Proceedings of the LOCALIZATION 1999 International Conference on 'Disorder and Interaction in Transport Phenomena' - Hamburg, Ger|
Duration: 29 Jul 1999 → 3 Aug 1999