Spin Transport in Hydrogenated Graphene

Abstract

In this review we discuss the multifaceted problem of spin transport in hydrogenated graphene from a theoretical perspective. The current experimental findings suggest that hydrogenation can either increase or decrease spin lifetimes, which calls for clarification. We first discuss the spin-orbit coupling induced by local $\sigma -\pi$ re-hybridization and ${\mathbf{sp}}^3$ C-H defect formation together with the formation of a local magnetic moment. First-principles calculations of hydrogenated graphene unravel the strong interplay of spin-orbit and exchange couplings. The concept of magnetic scattering resonances, recently introduced \cite{Kochan2014} is revisited by describing the local magnetism through the self-consistent Hubbard model in the mean field approximation in the dilute limit, while spin relaxation lengths and transport times are computed using an efficient real space order N wavepacket propagation method. Typical spin lifetimes on the order of 1 nanosecond are obtained for 1 ppm of hydrogen impurities (corresponding to transport time about 50 ps), and the scaling of spin lifetimes with impurity density is described by the Elliott-Yafet mechanism. This reinforces the statement that magnetism is the origin of the substantial spin polarization loss in the ultraclean graphene limit.

10 pages, 8 figures, accepted for publication in 2D Materials as a Topical Review

References in corpus (17)

• Half-Metallic Graphene Nanoribbons
• Control of graphene's properties by reversible hydrogenation
• Graphene Spintronics
• Magnetism in Graphene Induced by Single-Atom Defects
• Emergence of magnetism in graphene materials and nanostructures
• Vacancy induced magnetism in graphene and graphene ribbons
• Magnetism in Disordered Graphene and Irradiated Graphite
• Modeling disorder in graphene
• Magnetic Moment Formation in Graphene Detected by Scattering of Pure Spin Currents
• 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
• Spin transport in high quality suspended graphene devices
• Long spin relaxation times in wafer scale epitaxial graphene on SiC(0001)
• Pseudospin-driven spin relaxation mechanism in graphene
• Enhancement of spin relaxation time in hydrogenated graphene spin valve devices
• Quantum Hall Effect in Hydrogenated Graphene
• A stable path to ferromagnetic hydrogenated graphene growth

Cited by in corpus (38)

• Exceptional piezoelectricity, high thermal conductivity and stiffness and promising photocatalysis in two-dimensional MoSi2N4 family confirmed by first-principles
• Colloquium: Spintronics in graphene and other two-dimensional materials
• Giant Spin Lifetime Anisotropy in Graphene Induced by Proximity Effects
• Spin transport in graphene/transition metal dichalcogenide heterostructures
• Model spin-orbit coupling Hamiltonians for graphene systems
• Determination of the spin-lifetime anisotropy in graphene using oblique spin precession
• Linear Scaling Quantum Transport Methodologies
• Nanoporous graphene: a 2D semiconductor with anisotropic mechanical, optical and thermal conduction properties
• Mechanical, optical, and thermoelectric properties of semiconducting ZnIn2X4 (X= S, Se, Te) monolayers
• Spin communication over 30 $\mu$m long channels of chemical vapor deposited graphene on SiO${}_2$
• Orbital Hall physics in two-dimensional Dirac materials
• Thermal and electronic transport characteristics of highly stretchable graphene kirigami
• Resonant scattering by magnetic impurities as a model for spin relaxation in bilayer graphene
• Coulomb charging energy of vacancy-induced states in graphene
• Impurity invisibility in graphene: Symmetry guidelines for the design of efficient sensors
• Spin Manipulation in Graphene by Chemically-Induced Sublattice Pseudospin Polarization
• Theory of spin-orbit induced spin relaxation in functionalized graphene
• Anomalous magnetism in hydrogenated graphene
• Scaling behavior of spin transport in hydrogenated graphene
• Microscopic linear response theory of spin relaxation and relativistic transport phenomena in graphene
• Charge and Spin Transport Anisotropy in Nanopatterned Graphene
• Exploration of mechanical, thermal conductivity and electromechanical properties of graphene nanoribbon springs
• Grain boundary-induced variability of charge transport in hydrogenated polycrystalline graphene
• Hydrogen adatoms on graphene: the role of hybridization and lattice distortion
• Two-dimensional electronic transport in rubrene: the impact of inter-chain coupling
• Kondo effect due to a hydrogen impurity in graphene: a multichannel Kondo problem with diverging hybridization
• Spin Relaxation in Graphene with self-assembled Cobalt Porphyrin Molecules
• Spin relaxation 1/f noise in graphene
• Spin Dynamics in Bilayer Graphene : Role of Electron-Hole Puddles and the Dyakonov-Perel Mechanism
• Breakdown of the Hebel-Slichter effect in superconducting graphene due to the emergence of Yu-Shiba-Rusinov states at magnetic resonant scatterers
• Spin relaxation in disordered graphene: Interplay between puddles and defect-induced magnetism
• Critical temperature of two-dimensional hydrogenated multilayer graphene-based diluted ferromagnet
• Tuning magnetism in graphene nanoribbons via strain and adatoms
• Large scale calculations of thermoelectric transport coefficients: a case study of γ-graphyne with point defects
• A two-channel model for Spin-relaxation noise
• Resilient Intraparticle Entanglement and its Manifestation in Spin Dynamics of Disordered Dirac Materials
• Proximity spin-orbit coupling in graphene on alloyed transition metal dichalcogenides
• Topological features of hydrogenated graphene