Introduction of spin-orbit interaction into graphene with hydrogenation

TL;DR

This paper demonstrates the induction of spin-orbit interaction in graphene via weak hydrogenation, confirmed through the observation of the inverse spin Hall effect and spin injection experiments, advancing spintronic applications.

Contribution

It introduces a method to induce spin-orbit interaction in graphene using weak hydrogenation and confirms it through experimental detection of the inverse spin Hall effect.

Findings

Spin-orbit interaction was successfully introduced into graphene.

Inverse spin Hall effect was observed, confirming SOI presence.

Spin injection experiments validated the results.

Abstract

Introduction of spin-orbit interaction (SOI) into graphene with weak hydrogenation ($\sim$0.1\%) by dissociation of hydrogen silsesquioxane resist has been confirmed through the appearance of inverse spin Hall effect. The spin current was produced by spin injection from permalloy electrodes excluding non-spin relating experimental artifact.