Abstract
We have investigated the transport properties of two-dimensional arrays of normal islands interconnected by tunnel junctions fabricated close to a conducting ground plane. For bias voltages below a threshold voltage the current is thermally activated with an activation energy proportional to For scales as where and for two samples. For constant exhibits Coulomb-blockade oscillations as a function of the voltage of the ground plane. The amplitude of these oscillations scales as where and for the same samples, respectively. These values are consistent with our theoretical prediction
- Received 12 December 1997
DOI:https://doi.org/10.1103/PhysRevB.57.R6842
©1998 American Physical Society