Spin-based majority computation

Abstract

The downscaling of Complementary Metal Oxide Semiconductor (CMOS) devices will come to an end in the following decade. This has accelerated research that explores new device concepts that can help the semiconductor industry move forward, beyond the CMOS roadmap. Such device concepts include spin-based technologies which have a propensity to low-energy operation and non-volatility. More specifically, Spin Wave Devices (SWD) and Spin Torque Majority Gates (STMG) can be used to construct logic circuits that efficiently use a majority gate primitive. This leads to logic optimization that can enable more compact and energy-efficient circuits. In this chapter we describe operating principles and dynamic behavior of SWD and STMG. We present circuit benchmarking and outlook for these two concepts and discuss the action points that will enable them.