Resonant Tunneling Through Quantum Dot Arrays

Guanlong Chen, Purdue University - Main Campus
Gerhard Klimeck, Purdue University - Main Campus
Supriyo Datta, Purdue University - Main Campus
Guanhua Chen, Caltech
William A. Goddard III, Caltech

Date of this Version



Phys. Rev. B, Vol. 50, Number 11 (1994) 8035


This is the published version of M. R. Wegewijs and Yu. V. Nazarov. (15 November 1999). "Resonant tunneling through linear arrays of quantum dots". First published in the Physical Review B and is available online at:


We apply the Hubbard Hamiltonian to describe quantum-dot arrays weakly coupled to two contacts. Exact diagonalization is used to calculate the eigenstates of the arrays containing up to six dots and the linear-response conductance is then calculated as a function of the Fermi energy. In the atomic limit the conductance peaks form two distinct groups separated by the intradot Coulomb repulsion, while in the band limit the peaks occur in pairs. The crossover is studied. A finite interdot repulsion is found to cause interesting rearrangements in the conductance spectrum.


Nanoscience and Nanotechnology