Edge Effect in Two-Dimensional Network of Small Josephson Junctions

抄録

In a two-dimensional network of small tunneling junctions, the electric force lines are confined within the system. Therefore, the existence of the edge imposes an important condition on the interaction between charges in the system. We demonstrate the effect of the edge on in the temperature dependence of the resistance. With decreasing temperature, the resistance increases faster in narrower networks, while the tunneling resistance and charging energy are kept constant. The difference was larger than that expected from the calculations based on creation energy of charges and anticharges.