Spin Transport and Precession in Graphene measured by Nonlocal and Three-Terminal Methods

Abstract

We investigate the spin transport and precession in graphene by using the Hanle effect in nonlocal and threeterminal measurement geometries. Identical spin lifetimes, spin diffusion lengths and spin polarizations are observed in graphene devices for both techniques over a wide range of temperatures. The magnitude of the spin signals is well explained by spin transport models. These observations rules out any signal enhancements or additional scattering mechanisms at the interfaces for both geometries. This validates the applicability of both the measurement methods for graphene based spintronics devices and their reliable extractions of spin parameters.

5 pages, 4 figures

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• Contact induced spin relaxation in Hanle spin precession measurements
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Cited by in corpus (7)

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• Dielectrics for Two-Dimensional Transition Metal Dichalcogenide Applications
• Large-scale BN tunnel barriers for graphene spintronics
• 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