1-D array implementation of the resistively-coupled single-electron transistor

The authors fabricated and tested the first version of the resistively coupled single-electron transistor (R-SET) based on the correlated transfer of single electrons in ultrasmall junctions. In this version, a one-dimensional array of 80*80 nm/sup 2/ Al/Al/sub x/O/sub y//Al junctions served as a resistor for transmission of the signal to the middle electrode of a pair of similar junctions. Of three tested R-SETs, all exhibited a real power gain, and one device showed a DC voltage gain of 0.85. The data are found to be in reasonable agreement with numerical simulations based on the orthodox theory of correlated tunneling taking into account the superconductivity of aluminum electrodes.