Electron spin relaxation in graphene from a microscopic approach: Role of electron-electron interaction

Abstract

Electron spin relaxation in graphene on a substrate is investigated from the fully microscopic kinetic spin Bloch equation approach. All the relevant scatterings, such as the electron-impurity, electron--acoustic-phonon, electron--optical-phonon, electron--remote-interfacial-phonon, as well as electron-electron Coulomb scatterings, are explicitly included. Our study concentrates on clean intrinsic graphene, where the spin-orbit coupling from the adatoms can be neglected. We discuss the effect of the electron-electron Coulomb interaction on spin relaxation under various conditions. It is shown that the electron-electron Coulomb scattering plays an important role in spin relaxation at high temperature. We also find a significant increase of the spin relaxation time for high spin polarization even at room temperature, which is due to the Coulomb Hartree-Fock contribution-induced effective longitudinal magnetic field. It is also discovered that the spin relaxation time increases with the in-plane electric field due to the hot-electron effect, which is different from the non-monotonic behavior in semiconductors. Moreover, we show that the electron-electron Coulomb scattering in graphene is not strong enough to establish the steady-state hot-electron distribution in the literature and an alternative approximate one is proposed based on our computation.

8 pages, 5 figures, to be published in Phys. Rev. B

References in corpus (54)

• Electric Field Effect in Atomically Thin Carbon Films
• Quantum Spin Hall Effect in Graphene
• Intrinsic and Extrinsic Performance Limits of Graphene Devices on SiO2
• Electronic spin transport and spin precession in single graphene layers at room temperature
• Dielectric function, screening, and plasmons in 2D graphene
• Carrier transport in 2D graphene layers
• A self-consistent theory for graphene transport
• Temperature dependent transport in suspended graphene
• Intrinsic and Rashba Spin-orbit Interactions in Graphene Sheets
• Dynamical polarization of graphene at finite doping
• Spin-orbit coupling in curved graphene, fullerenes, nanotubes, and nanotube caps
• Spin-orbit gap of graphene: First-principles calculations
• Strong suppression of weak (anti)localization in graphene
• Kohn Anomalies and Electron-Phonon Interaction in Graphite
• Acoustic phonon scattering limited carrier mobility in 2D extrinsic graphene
• Band-structure topologies of graphene: spin-orbit coupling effects from first principles
• Electronic transport in graphene: A semi-classical approach including midgap states
• Impurity induced spin-orbit coupling in graphene
• Substrate limited electron dynamics in graphene
• Spin-Orbit-Mediated Spin Relaxation in Graphene
• Electron Transport and Hot Phonons in Carbon Nanotubes
• Electron spin relaxation in graphene: the role of the substrate
• Linear scaling between momentum and spin scattering in graphene
• Is Graphene a Fermi Liquid?
• First Principles Analysis of Electron-Phonon Interaction in Graphene
• High-Mobility Few-Layer Graphene Field Effect Transistors Fabricated on Epitaxial Ferroelectric Gate Oxides
• High-Mobility Few-Layer Graphene Field Effect Transistors Fabricated on Epitaxial Ferroelectric Gate Oxides (Supplementary Information)
• Anisotropic spin relaxation in graphene
• Electronic spin transport in graphene field effect transistors
• Voltage and temperature dependencies of conductivity in gated graphene
• Inelastic carrier lifetime in graphene
• Hyperfine interaction and electron-spin decoherence in graphene and carbon nanotube quantum dots
• Spectro-microscopy of single and multi-layer graphene supported by a weakly interacting substrate
• Diffusive Charge Transport in Graphene on SiO2
• Electron spin relaxation in bulk III-V semiconductors from a fully microscopic kinetic spin Bloch equation approach
• Collective excitations of Dirac electrons in a graphene layer with spin-orbit interaction
• High temperature spin dephasing in n-typed GaAs quantum wells
• Finite-temperature Screening and the Specific Heat of Doped Graphene Sheets
• Effect of initial spin polarization on spin dephasing and electron g factor in a high-mobility two-dimensional electron system
• Enhanced spin relaxation time due to electron-electron scattering in semiconductors
• Hydrodynamic theory of transport in doped graphene
• Hot-electron effect in spin dephasing in $n$-type GaAs quantum wells
• Spin relaxation in $n$-type GaAs quantum wells from a full microscopic approach
• Transport in suspended graphene
• Models of electron transport in single layer graphene
• Spin relaxation times in disordered graphene
• Dependence of spin dephasing on initial spin polarization in a high-mobility two-dimensional electron system
• Multi-subband effect in spin dephasing in semiconductor quantum wells
• Effect of electron-electron scattering on spin dephasing in a high-mobility low-density twodimensional electron gas
• Multi-valley spin relaxation in the presence of high in-plane electric fields in $n$-type GaAs quantum wells
• Electronic structure of epitaxial graphene nanoribbons on SiC(0001)
• Spin relaxation time, spin dephasing time and ensemble spin dephasing time in $n$-type GaAs quantum wells
• Electrical Control of Dynamic Spin Splitting Induced by Exchange Interaction as Revealed by Time Resolved Kerr Rotation in a Degenerate Spin-Polarized Electron Gas
• Spin dynamics in high-mobility two-dimensional electron systems

Cited by in corpus (21)

• Colloquium: Spintronics in graphene and other two-dimensional materials
• Spin lifetimes exceeding 12 nanoseconds in graphene non-local spin valve devices
• Spin transport in graphene/transition metal dichalcogenide heterostructures
• Comparison between charge and spin transport in few layer graphene
• Electron spin relaxation in graphene with random Rashba field: Comparison of D'yakonov-Perel' and Elliott-Yafet--like mechanisms
• Electron spin relaxation due to D'yakonov-Perel' and Elliot-Yafet mechanisms in monolayer MoS${}_2$: Role of intravalley and intervalley processes
• Spin dephasing and pumping in graphene due to random spin-orbit interaction
• Effects of Dephasing on Spin Lifetime in Ballistic Spin-Orbit Materials
• Curvature-induced spin-orbit coupling and spin relaxation in a chemically clean single-layer graphene
• Dynamics of photoexcited carriers in graphene
• Electron spin diffusion and transport in graphene
• Intrinsic electron spin relaxation due to the D'yakonov-Perel' mechanism in monolayer MoS${}_2$
• Hot-carrier transport and spin relaxation on the surface of topological insulator
• Microscopic theory of ultrafast dynamics of carriers photoexcited by THz and near-infrared linearly-polarized laser pulses in graphene
• Electron spin diffusion in monolayer MoS${}_2$
• Electron spin relaxation in bilayer graphene
• Hole spin relaxation in bilayer WSe${}_2$
• Electron spin relaxation in rippled graphene with low mobilities
• Spin diffusion in p-type bilayer WSe${}_2$
• Terahertz radiation from accelerating charge carriers in graphene under ultrafast photoexcitation
• Electron spin diffusion at the interface of multiferroic oxides