Manipulation of Spin Transport in Graphene by Surface Chemical Doping

Abstract

The effects of surface chemical doping on spin transport in graphene are investigated by performing non-local measurements in ultrahigh vacuum while depositing gold adsorbates. We demonstrate manipulation of the gate-dependent non-local spin signal as a function of gold coverage. We discover that charged impurity scattering is not the dominant mechanism for spin relaxation in graphene, despite its importance for momentum scattering. Finally, unexpected enhancements of the spin lifetime illustrate the complex nature of spin relaxation in graphene.

11 Pages, 4 figures

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• Spin-Orbit Proximity Effect in Graphene
• Tunneling Spin Injection into Single Layer Graphene (Supplementary Information)
• Tunneling Spin Injection into Single Layer Graphene
• Contact induced spin relaxation in Hanle spin precession measurements
• Observation of Resistively Detected Hole Spin Resonance and Zero-field Pseudo-spin Splitting in Epitaxial Graphene
• Spin Relaxation in Single Layer Graphene with Tunable Mobility
• Absence of a transport signature of spin-orbit coupling in graphene with indium adatoms
• Rashba Spin Orbit Interaction and Birefringent Electron Optics in Graphene
• Effect of contacts on spin lifetime measurements in graphene
• Electrical band flattening, valley flux, and superconductivity in twisted trilayer graphene
• Electron spin diffusion and transport in graphene
• Contact-induced charge contributions to non-local spin transport measurements in Co/MgO/graphene devices
• Symmetry breaking effects on spin and electronic transport in graphene
• Spin relaxation related to the edge scattering in graphene
• Effect of in-situ deposition of Mg adatoms on spin relaxation in graphene
• Electron spin dynamics of two-dimensional layered materials
• Spin Relaxation at Graphene Nanoribbons in the presence of Substrate Surface Roughness
• Spin diffusion in ultracold spin-orbit coupled ${}^{40}$K gas
• Spin Relaxation in Weak Localization Regime in Multilayer Graphene Spin Valves
• Upper limit of spin relaxation in suspended graphene
• Large spin signal and spin rectification in folded-bilayer graphene
• Resilient Intraparticle Entanglement and its Manifestation in Spin Dynamics of Disordered Dirac Materials
• Room temperature two terminal tunnel magnetoresistance in lateral graphene transistor
• Proximity spin-orbit coupling in graphene on alloyed transition metal dichalcogenides
• Enhanced Tunnel Spin Injection into Graphene using Chemical Vapor Deposited Hexagonal Boron Nitride