Ab initio investigation of Elliott-Yafet electron-phonon mechanism in laser-induced ultrafast demagnetization

Abstract

The spin-flip (SF) Eliashberg function is calculated from first-principles for ferromagnetic Ni to accurately establish the contribution of Elliott-Yafet electron-phonon SF scattering to Ni's femtosecond laser-driven demagnetization. This is used to compute the SF probability and demagnetization rate for laser-created thermalized as well as non-equilibrium electron distributions. Increased SF probabilities are found for thermalized electrons, but the induced demagnetization rate is extremely small. A larger demagnetization rate is obtained for {non-equilibrium} electron distributions, but its contribution is too small to account for femtosecond demagnetization.

5 pages, 3 figures, to appear in PRL

References in corpus (2)

• Super-Diffusive Spin-Transport as a Mechanism of Ultrafast Demagnetization
• Influence of laser-excited electron distributions on the x-ray magnetic circular dichroism spectra: Implications for femtosecond demagnetization in Ni

Cited by in corpus (61)

• Interface-Induced Phenomena in Magnetism
• Perspective: Ultrafast magnetism and THz spintronics
• Polarized phonons carry the missing angular momentum in femtosecond demagnetization
• Electron-phonon-scattering dynamics in ferromagnetic metals and its influence on ultrafast demagnetization processes
• Ab initio theory of electron-phonon mediated ultrafast spin relaxation of laser-excited hot electrons in transition-metal ferromagnets
• Principles of spintronic THz emitters
• Role of critical spin fluctuations in ultrafast demagnetization of transition-metal rare-earth alloys
• Layer specific observation of slow thermal equilibration in ultrathin metallic nanostructures by femtosecond x-ray diffraction
• Ultrafast demagnetization in bulk vs thin films: an ab-initio study
• Driving ferromagnets into a critical region of a magnetic phase diagram
• Coherent Helicity-Dependent Spin-Phonon Oscillations in the Ferromagnetic van der Waals Crystal CrI3
• Electric Current Induced Ultrafast Demagnetization
• Interface reflectivity of a superdiffusive spin current in ultrafast demagnetization and THz emission
• Ultrafast X-Ray Induced Changes of the Electronic and Magnetic Response of Solids Due to Valence Electron Redistribution
• Anisotropy of spin relaxation in metals
• All-optical spin switching: A new frontier in femtomagnetism -- A short review and a simple theory
• Reexamination of the Elliott-Yafet spin-relaxation mechanism
• Distinct Ultrafast Electronic and Magnetic Response in M-edge Magnetic Circular Dichroism
• Insights into ultrafast demagnetization in pseudo-gap half metals
• Ab initio investigation of light-induced relativistic spin-flip effects in magneto-optics
• Analysis of the linear relationship between asymmetry and magnetic moment at the M-edge of 3d transition metals
• Ultrafast demagnetization in ferromagnetic materials: Origins and progress
• Fermi surfaces, spin-mixing parameter, and colossal anisotropy of spin relaxation in transition metals from ab initio theory
• High-frequency magnon excitation due to femtosecond spin-transfer torques
• Polarisation-dependent single-pulse ultrafast optical switching of an elementary ferromagnet
• Transport theory for femtosecond laser-induced spin-transfer torques
• Spin-orbit coupling effects on spin-dependent inelastic electronic lifetimes in ferromagnets
• Domain wall dynamics due to femtosecond laser-induced superdiffusive spin transport
• Anisotropic Ultrafast Spin Dynamics in Epitaxial Cobalt
• Ultrafast Demagnetization through Femtosecond Generation of Non-thermal Magnons
• Signatures of relativistic spin-light coupling in ultrafast magneto-optical pump-probe experiments
• Ultrafast magnetization reversal in ferromagnetic spin-valves: an s-d model perspective
• Ultrafast hot-electron induced quenching of Tb4f magnetic order
• Modelling of Spintronic Terahertz Emitters as a function of spin generation and diffusion geometry
• Electron-phonon mediated spin-flip as driving mechanism for ultrafast magnetization dynamics in 3$d$ ferromagnets
• Fermi Level Controlled Ultrafast Demagnetization Mechanism in Half-Metallic Heusler Alloy
• Continuum-atomistic simulation of picosecond laser heating of copper with electron heat capacity from ab initio calculation
• State-resolved ultrafast charge and spin dynamics in [Co/Pd] multilayers
• Spin polarisation of ultrashort spin current pulses injected in semiconductors
• Accelerating the laser-induced demagnetization of a ferromagnetic film by antiferromagnetic order in an adjacent layer
• Ultrafast spin-lattice relaxation in ferromagnets including effective spin-orbit fields
• Study of the ultrafast dynamics of ferromagnetic materials with a Quantum Monte Carlo atomistic model
• Thermodynamically self-consistent non-stochastic micromagnetic model for the ferromagnetic state
• Microscopic electronic configurations after ultrafast magnetization dynamics
• Modeling of ultrafast X-ray induced magnetization dynamics in magnetic multilayer systems
• Tuning the laser-induced ultrafast demagnetization of transition metals
• Generalized Elliott-Yafet spin-relaxation time for arbitrary spin mixing
• Electronic processes occurring during ultrafast demagnetization of cobalt triggered by X-ray photons tuned to Co L${}_3$ resonance
• Ultrafast electron dynamics in altermagnetic materials
• Manipulating femtosecond magnetism through pressure: First-principles calculations
• Optically induced spin-dependent diffusive transport in the presence of spin-orbit interaction for all-optical magnetization reversal
• Ultrafast demagnetization of iron induced by optical vs terahertz pulses
• Electron-Phonon Scattering governs both Ultrafast and Precessional Magnetization Dynamics in Co-Fe Alloys
• Electronic-Entropy-Driven Solid-Solid Phase Transitions in Elemental Metals
• Ultrafast magnetic moment transfer and bandgap renormalization in monolayer FeCl${}_2$
• Hot Electron-Driven Structural Expansion and Magnetic Collapse in Bilayer FeSe
• Electronic mechanism of sub-100-fs demagnetization induced by a femtosecond light pulse
• On the conservation of the angular momentum in ultrafast spin dynamics
• Ultrafast electron-phonon scattering in antiferromagnetic Dirac semimetals
• Electronic-Entropy-Driven Phase Transitions in Compressed Iron Oxides
• Interplay of electron-magnon scattering and spin-orbit induced electronic spin-flip scattering in a two-band Stoner model