Single-electron shift-register circuit

This work presents a 4-bit shift-register designed with single-electron tunneling devices. Firstly, a single-electron D flip-flop based on NAND gates was designed and simulated. Based on D flip-flops, the shift-register architecture was also designed and successfully simulated at room temperature. Some considerations about noise margin were made. Moreover, stability analyses for the SET NAND, SET D flip-flop and SET shift-register were carried out.