Spin transport in high-quality suspended graphene devices.

Guimarães, Marcos H D; Veligura, A; Zomer, P J; Maassen, T; Vera-Marun, I J; Tombros, N; van Wees, B J · Nano Lett · 2012

basic_science · Level V

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Abstract

We measure spin transport in high mobility suspended graphene (μ ≈ 10(5)cm(2)/(V s)), obtaining a (spin) diffusion coefficient of 0.1 m(2)/s and giving a lower bound on the spin relaxation time (τ(s) ≈ 150 ps) and spin relaxation length (λ(s) = 4.7 μm) for intrinsic graphene. We develop a theoretical model considering the different graphene regions of our devices that explains our experimental data.