Monte Carlo study of charge transport in slantingly coupled arrays of small tunnel junctions

Yoshinao Mizugaki and Hiroshi Shimada
Phys. Rev. B 71, 115103 – Published 7 March 2005

Abstract

We present a numerical investigation on the charge transport in capacitively coupled arrays of small tunnel junctions in the case of slanted coupling. Current-voltage characteristics of the arrays having various coupling capacitance (Cc) are simulated using the Monte Carlo method. In contrast to the case of straight coupled arrays, slantingly coupled arrays exhibit the current mirror effect using a coupling capacitance as small as CcC0.1, where C is the junction capacitance. However, when Cc is too large (CcC>1), electron-electron or hole-hole chains are formed in each array, which deteriorate the current mirror effect. Conditions for the formation of such chains are derived from analysis of a simplified model of slantingly coupled arrays.

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  • Received 5 August 2004

DOI:https://doi.org/10.1103/PhysRevB.71.115103

©2005 American Physical Society

Authors & Affiliations

Yoshinao Mizugaki*

  • Department of Electronic Engineering, The University of Electro-Communications, 1-5-1 Chofugaoka, Chofu, Tokyo, 182-8585 Japan

Hiroshi Shimada

  • Course of Coherent Optical Science, and Department of Applied Physics and Chemistry, The University of Electro-Communications, 1-5-1 Chofugaoka, Chofu, Tokyo, 182-8585 Japan

  • *Electronic address: mizugaki@ee.uec.ac.jp

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Vol. 71, Iss. 11 — 15 March 2005

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