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Author Shangguan, W. Z. ♦ Au Yeung, T. C. ♦ Yu, Y. B. ♦ Kam, C. H.
Sponsorship (US)
Source United States Department of Energy Office of Scientific and Technical Information
Content type Text
Publisher The American Physical Society
Language English
Subject Keyword CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS ♦ AMPLITUDES ♦ ELECTRONS ♦ ENERGY LEVELS ♦ SELF-ENERGY ♦ TRANSPORT
Abstract In this paper we study electronic transport through a quantum dot array containing an arbitrary number of quantum dots connected in a series by tunnel coupling under dc bias. The on-site Coulomb interaction is ignored. The retarded self-energy of any dot in the array is made up of left and right components and is of staircase type, terminating at corresponding electron reservoirs. We calculate the dc current based on the nonequilibrium Green{close_quote}s function formalism developed by Jauho et al. [A.-P. Jauho, Ned S. Wingreen, and Y. Meir, Phys. Rev. B >50, 5528 (1994)]. The dc current in both finite and infinite number dots in the array is calculated. The electronic spectrum of the system is found to fall within an interval centered at {epsilon}{sub 0} (the dot energy level) with a width of two times the tunnel coupling amplitude between two neighboring dots. The electronic charge in each dot is plotted for the finite number dot array.
ISSN 01631829
Educational Use Research
Learning Resource Type Article
Publisher Date 2001-06-15
Publisher Place United States
Journal Physical Review B
Volume Number 63
Issue Number 23


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