Experimental Demonstration of XOR Operation in Graphene Magnetologic Gates at Room Temperature

TL;DR

This paper demonstrates an XOR logic gate using graphene at room temperature, leveraging spin transport and ferromagnetic contacts, and discusses potential improvements for spintronic applications.

Contribution

It presents the first experimental realization of a graphene-based XOR logic gate operating at room temperature, utilizing spin injection and transport.

Findings

Successful XOR operation at room temperature

Electrical bias tuning enables input balancing

Simulation indicates potential for device optimization

Abstract

We report the experimental demonstration of a magnetologic gate built on graphene at room temperature. This magnetologic gate consists of three ferromagnetic electrodes contacting a single layer graphene spin channel and relies on spin injection and spin transport in the graphene. We utilize electrical bias tuning of spin injection to balance the inputs and achieve "exclusive or" (XOR) logic operation. Furthermore, simulation of the device performance shows that substantial improvement towards spintronic applications can be achieved by optimizing device parameters such as device dimensions. This advance holds promise as a basic building block for spin-based information processing.