Graduate School of
Science and Engineering

Integrated circuits (IC) that perform advanced information processing in PCs are composed of a large number of transistors that are about ten nanometers in size and control the transfer of electrical charge bearing information. Single-electron transistors and other single-electron devices are ultimate devices that can control transfer of individual electrons with the smallest charge by means of their property of repelling each other. Single-electron devices can treat each electron as an information carrier and dramatically improve the degree of integration while reducing the power consumption of ICs. We are carrying out theoretical research on the behavior of multi-dot single-electron devices, each of which has a single-common-gate that can be easily fabricated. We are also working on single-electron logic gates.