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Long distance spin communication in chemical vapour deposited graphene.

ABSTRACT: Graphene is an ideal medium for long-distance spin communication in future spintronic technologies. So far, the prospect is limited by the smaller sizes of exfoliated graphene flakes and lower spin transport properties of large-area chemical vapour-deposited (CVD) graphene. Here we demonstrate a high spintronic performance in CVD graphene on SiO2/Si substrate at room temperature. We show pure spin transport and precession over long channel lengths extending up to 16??m with a spin lifetime of 1.2?ns and a spin diffusion length ?6??m at room temperature. These spin parameters are up to six times higher than previous reports and highest at room temperature for any form of pristine graphene on industrial standard SiO2/Si substrates. Our detailed investigation reinforces the observed performance in CVD graphene over wafer scale and opens up new prospects for the development of lateral spin-based memory and logic applications.

SUBMITTER: Kamalakar MV 

PROVIDER: S-EPMC4433146 | BioStudies | 2015-01-01

REPOSITORIES: biostudies

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