Spin transport in high quality suspended graphene devices

We measure spin transport in high mobility suspended graphene (\mu ~ 10^5 cm^2/Vs), obtaining a (spin) diffusion coefficient of 0.1 m^2/s and giving a lower bound on the spin relaxation time (\tau_s ~ 150 ps) and spin relaxation length (\lambda_s=4.7 \mu m) for intrinsic graphene. We develop a theor...

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Bibliographic Details
Published inarXiv.org
Main Authors Guimarães, M H D, Veligura, A, Zomer, P J, Maassen, T, Vera-Marun, I J, Tombros, N, van Wees, B J
Format Paper Journal Article
LanguageEnglish
Published Ithaca Cornell University Library, arXiv.org 06.07.2012
Subjects
Diffusion coefficient
Graphene
Lower bounds
Physics - Mesoscale and Nanoscale Physics
Relaxation time
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Summary:We measure spin transport in high mobility suspended graphene (\mu ~ 10^5 cm^2/Vs), obtaining a (spin) diffusion coefficient of 0.1 m^2/s and giving a lower bound on the spin relaxation time (\tau_s ~ 150 ps) and spin relaxation length (\lambda_s=4.7 \mu m) for intrinsic graphene. We develop a theoretical model considering the different graphene regions of our devices that explains our experimental data.
ISSN:2331-8422
DOI:10.48550/arxiv.1207.1572