Spin Injection into a Graphene Thin Film at Room Temperature

TL;DR

This paper demonstrates reliable spin injection into a graphene thin film at room temperature using non-local magnetoresistance measurements, marking the first such achievement into molecules at ambient conditions.

Contribution

It presents the first demonstration of spin injection into molecules at room temperature using non-local MR measurements in graphene.

Findings

Obvious MR effect observed at room temperature

MR effect linked to ferromagnetic electrode magnetization reversal

First report of spin injection into molecules at room temperature

Abstract

We demonstrate spin injection into a graphene thin film with high reliability by using non-local magnetoresistance (MR) measurements, in which the electric current path is completely separated from the spin current path. Using these non-local measurements, an obvious MR effect was observed at room temperature; and the MR effect was ascribed to magnetization reversal of ferromagnetic electrodes. This result is a direct demonstration of spin injection into a graphene thin film. Furthermore, this is the first report of spin injection into molecules at room temperature.