Tunneling current through a quantum dot array | Zendy

David M.T. Kuo | Zendy; G. Y. Guo | Zendy; Yia-Chung Chang | Zendy

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Tunneling current through a quantum dot array

Author(s) -

David M.T. Kuo,

G. Y. Guo,

Yia-Chung Chang

Publication year - 2001

Publication title -

applied physics letters

Language(s) - English

Resource type - Journals

eISSN - 1077-3118

pISSN - 0003-6951

DOI - 10.1063/1.1420775

Subject(s) - quantum tunnelling , quantum dot , condensed matter physics , physics , coulomb , coupling (piping) , electron , coulomb blockade , hubbard model , current (fluid) , quantum mechanics , materials science , voltage , superconductivity , transistor , metallurgy , thermodynamics

The tunneling current through a quantum dot array (QDA) is studied theoretically. Strong electron correlation effect is taken into account in the QDA in which the quantum dots provide a strong three-dimensional confinement effect. A mixed Hubbard and Anderson model is used to simulate the system. It is found that Coulomb charging splits the band resulting from interdot coupling into two subbands. The tunneling current is thus influenced significantly by both Coulomb charging and interdot coupling.

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