Exact eigenstates and transmission for two interacting electrons on quantum dots

Details Exact eigenstates and transmission for two interacting electrons on quantum dots Exact eigenstates and transmission for two interacting electrons on quantum dots

1999-08-04

arxiv.org/abs/cond-mat/9908059v1

Physics

Condensed Matter

Scientific paper

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, and 2 on a one--dimensional chain (modeling 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.

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