Defect-mediated spin relaxation and dephasing in graphene

Abstract

A principal motivation to develop graphene for future devices has been its promise for quantum spintronics. Hyperfine and spin-orbit interactions are expected to be negligible in single-layer graphene. Spin transport experiments, on the other hand, show that graphene's spin relaxation is orders of magnitude faster than predicted. We present a quantum interference measurement that disentangles sources of magnetic and non-magnetic decoherence in graphene. Magnetic defects are shown to be the primary cause of spin relaxation, while spin-orbit interaction is undetectably small.

11 pages, includes main text and supplement

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• Absence of a transport signature of spin-orbit coupling in graphene with indium adatoms
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• Counterintuitive gate dependence of weak antilocalization in bilayer graphene/WSe${}_2$ heterostructures
• Anisotropic intrinsic spin relaxation in graphene due to flexural distortions
• Resonant scattering due to adatoms in graphene: top, bridge, and hollow position
• Resonant scattering by magnetic impurities as a model for spin relaxation in bilayer graphene
• Strong spin-dependent negative differential resistance in composite graphene superlattices
• Interplay between energy dissipation and reservoir-induced thermalization in nonequilibrium quantum nanodevices
• Spin Manipulation in Graphene by Chemically-Induced Sublattice Pseudospin Polarization
• Magnetic Dirac Fermions and Chern Insulator Supported on Pristine Silicon Surface
• Proximity-Induced Spin-Orbit Coupling in Graphene-Bi${}_{1.5}$Sb${}_{0.5}$Te${}_{1.7}$Se${}_{1.3}$ Heterostructures
• Spin and Valley Noise in Two-Dimensional Dirac Materials
• Electron spin dynamics of two-dimensional layered materials
• Influence of impurity spin dynamics on quantum transport in epitaxial graphene
• Fluctuation Phenomena in Chaotic Dirac Quantum Dots: Artificial Atoms on Graphene Flakes
• Signature of gate-tunable magnetism in graphene grafted with Pt-porphyrins
• Microscopic linear response theory of spin relaxation and relativistic transport phenomena in graphene
• Electric fields and substrates dramatically accelerate spin relaxation in graphene
• Suppression of decoherence in a graphene monolayer ring
• Electronic transport and scattering times in tungsten-decorated graphene
• Conductance Peak Density in Nanowires
• Enhanced quantum coherence in graphene caused by Pd cluster deposition
• Universal Conductance Fluctuations in Electrolyte-Gated SrTiO3 Nanostructures
• Interplay between symmetry and spin-orbit coupling in graphene nanoribbons
• Gate induced enhancement of spin-orbit coupling in dilute fluorinated graphene
• Spin dependent quantum interference in non-local graphene spin valves
• Relationship between conductance fluctuation and weak localization in graphene
• Spin Relaxation in Graphene with self-assembled Cobalt Porphyrin Molecules
• Spin relaxation 1/f noise in graphene
• Spin relaxation in disordered graphene: Interplay between puddles and defect-induced magnetism
• Breakdown of the Hebel-Slichter effect in superconducting graphene due to the emergence of Yu-Shiba-Rusinov states at magnetic resonant scatterers
• Nuclear-induced dephasing and signatures of hyperfine effects in isotopically purified ${}^{13}$C graphene
• Polarization amplification by spin-doping in nanomagnetic/graphene hybrid systems
• Influence of spin dynamics of defects on weak localization in paramagnetic 2D metals
• Anomalous Transition Magnetic Moments in two-dimensional Dirac Materials
• A two-channel model for Spin-relaxation noise
• Asymmetric Electron-Hole Decoherence in Ion-Gated Epitaxial Graphene
• Ion-Implanted ${}^8$Li Nuclear Magnetic Resonance in Highly Oriented Pyrolytic Graphite
• Proximity spin-orbit coupling in graphene on alloyed transition metal dichalcogenides
• Spin transport in a normal meta-altermagnetic superconducting nanowire junction
• Activation of magnetic moments in CVD-grown graphene by annealing
• Tuning proximity-induced spin-orbit coupling in graphene/WSe${}_2$ heterostructures