Non-volatile Spin Switch for Boolean and Non-Boolean Logic

TL;DR

This paper proposes a non-volatile spin switch leveraging spin valves and the giant spin-Hall effect, enabling integrated logic operations with magnetic storage, potentially replacing CMOS in certain applications.

Contribution

It introduces a novel spin switch design that combines Read and Write units with non-volatile magnetic storage, enabling integrated Boolean and non-Boolean logic without external amplification.

Findings

Demonstrates a spin switch with input-output isolation and gain

Shows potential for logic operations with passive interconnections

Enables analog weighting through magnetic digitization

Abstract

We show that the established physics of spin valves together with the recently discovered giant spin-Hall effect could be used to construct Read and Write units that can be integrated into a single spin switch with input-output isolation, gain and fan-out similar to CMOS inverters, but with the information stored in nanomagnets making it non-volatile. Such spin switches could be interconnected, with no external amplification, just with passive circuit elements, to perform logic operations. Moreover, since the digitization and storage occurs naturally in the magnets, the voltages can be used to implement analog weighting for non-Boolean logic.