Spin transport in high quality suspended graphene devices

Abstract

We measure spin transport in high mobility suspended graphene (μ~ 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 (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.

22 pages, 6 figures; Nano Letters, Article ASAP (2012) (http://pubs.acs.org/doi/abs/10.1021/nl301050a)

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Cited by in corpus (19)

• Graphene Spintronics
• Controlling spin relaxation in hexagonal BN-encapsulated graphene with a transverse electric field
• Nanosecond spin lifetimes in single- and few-layer graphene-hBN heterostructures at room temperature
• Contact induced spin relaxation in Hanle spin precession measurements
• Contribution of defects to the spin relaxation in copper nanowires
• Enhancement of spin relaxation time in hydrogenated graphene spin valve devices
• Localized states influence spin transport in epitaxial graphene
• Rashba Spin Orbit Interaction and Birefringent Electron Optics in Graphene
• Large-scale BN tunnel barriers for graphene spintronics
• Suppression of contact-induced spin dephasing in graphene/MgO/Co spin-valve devices by successive oxygen treatments
• Contact-induced charge contributions to non-local spin transport measurements in Co/MgO/graphene devices
• Annealing-induced magnetic moments detected by spin precession measurements in epitaxial graphene on SiC
• Absence of hyperfine effects in ${}^{13}$C-graphene spin valve devices
• Spin transport in graphene nanostructures
• Spin dependent quantum interference in non-local graphene spin valves
• Spin injection from a ferromagnet into a semiconductor in the case of a rough interface
• Spin diffusion in ultracold spin-orbit coupled ${}^{40}$K gas
• The shape of the Hanle curve in spin-transport structures in the presence of the ac drive
• Manifestation of two-channel nonlocal spin transport in the shapes of the Hanle curves