A tunnel capacitor is an array of microscopic resistance-capacitance circuits with the resistive element provided by a tunnel junction. Because of their small size, such microcircuits display special properties due to charge quantization. An array of such circuits shows an oscillatory behavior in its capacitance-versus-voltage measurements. A new type of memory effect is found.

• Received 16 May 1969

DOI:https://doi.org/10.1103/PhysRevLett.22.1371