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 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 , where is the junction capacitance. However, when is too large , 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.
1 More- Received 5 August 2004
DOI:https://doi.org/10.1103/PhysRevB.71.115103
©2005 American Physical Society