Electrical detection of individual skyrmions in graphene devices

F. Finocchiaro, J. L. Lado, J. Fernandez-Rossier

Research output: Contribution to journalArticleScientificpeer-review

3 Citations (Scopus)

Abstract

We study a graphene Hall probe located on top of a magnetic surface as a detector of skyrmions, using as a working principle the anomalous Hall effect produced by the exchange interaction of the graphene electrons with the noncoplanar magnetization of the skyrmion. We study the magnitude of the effect as a function of the exchange interaction, skyrmion size, and device dimensions. Our calculations for multiterminal graphene nanodevices, working in the ballistic regime, indicate that for realistic exchange interactions a single skyrmion would give Hall voltages well within reach of the experimental state of the art. The proposed device could act as an electrical transducer that marks the presence of a single skyrmion in a nanoscale region, paving the way towards the integration of skyrmion-based spintronics and graphene electronics.

Original languageEnglish
Article number155422
JournalPhysical Review B
Volume96
Issue number15
DOIs
Publication statusPublished - 9 Oct 2017
MoE publication typeA1 Journal article-refereed

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