Reconfigurable Logic Gates Using Single-Electron Spin Transistors

TL;DR

This paper introduces reconfigurable logic gates based on single-electron spin transistors, leveraging magnetic configurations to dynamically alter logic functions, with simulations demonstrating their potential for flexible electronic circuit design.

Contribution

The paper presents novel reconfigurable logic gates using SESTs with magnetic control, enabling dynamic logic function changes without floating gates, supported by Monte Carlo simulations.

Findings

Successful simulation of reconfigurable AND/OR gates

Demonstration of logic gate reconfigurability via magnetic states

Potential for flexible, magnetic-controlled electronic circuits

Abstract

We propose and numerically analyze novel reconfigurable logic gates using "single-electron spin transistors" (SESTs), which are single-electron transistors (SETs) with ferromagnetic electrodes and islands. The output characteristics of a SEST depend on the relative magnetization configuration of the ferromagnetic island with respect to the magnetization of the source and the drain, i.e., high current drive capability in parallel magnetization and low current drive capability in antiparallel magnetization. The summation of multiple input signals can be achieved by directly coupling multiple input gate electrodes to the SEST island, without using a floating gate. A Tucker-type inverter with a variable threshold voltage, a reconfigurable AND/OR logic gate, and a reconfigurable logic gate for all symmetric Boolean functions are proposed and simulated using the Monte Carlo method.