On the classical aspects of electrons tunnelling through a quantum dot via a driven lattice gas model in one dimension

Noviani, Elisabeth Pratidhina Founda and Dwandaru, Wipsar Sunu Brams (2017) On the classical aspects of electrons tunnelling through a quantum dot via a driven lattice gas model in one dimension. Journal of Physics: Conference Series,, 953 (1). pp. 1-8. ISSN Online ISSN: 1742-6596 Pint ISSN: 1742-6588

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Abstract

A theoretical study of classical a spects, i.e.: density, current density, and average speed of electrons tunnelling through a quantum dot (QD) via a simple driven lattice gas model have been carried out. The main objective of this study is to determine some classical aspects of electron tunnelling through a QD using the driven lattice gas model. The study is conducted by considering a resemblance between the components of the QD with the components of the totally asymmetric simple exclusion process (TASEP) that consists of on ly a single site and open boundary conditions. The former consists of a source, an island, and a drain, which corresponds respectively to the left reservoir (i= 0), site i= 1, and the right reservoir (i= 2) of the latter. Explicit expressions of the density, current densities, and average speed for electrons tunnelling through the QD in the classical regime are obtained. At the steady state, the density of electrons tunnelling through the dot is 0.5 and the current density becomes v/2, where vis the speed of the electrons. Furthermore, the speedof the electrons may be obtained as functions of temperature and the difference between gate and source-drain potentials. For very low temperatures, the speed of electrons rapidly goes to zero pointing to the occurrence of Coulomb blockade.

Item Type:	Article
Subjects:	Physic Education
Divisions:	Proceeding
Depositing User:	F.X. Hadi
Date Deposited:	08 Jun 2018 04:52
Last Modified:	19 Oct 2018 08:31
URI:	https://repository.ukwms.ac.id/id/eprint/14681

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