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Superdiffusive spin transport as a mechanism of ultrafast demagnetization.
We propose a semiclassical model for femtosecond laser-induced demagnetization due to spin-polarized excited electron diffusion in the superdiffusive regime. Our approach treats the finite elapsedExpand
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Theory of laser-induced ultrafast superdiffusive spin transport in layered heterostructures
The debate over the origin of the ultrafast demagnetization has been intensively active for the past 16 years. Several microscopic mechanisms have been proposed but none has managed so far to provideExpand
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Ab Initio investigation of the Elliott-Yafet electron-phonon mechanism in laser-induced ultrafast demagnetization.
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'sExpand
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Disparate ultrafast dynamics of itinerant and localized magnetic moments in gadolinium metal
The Heisenberg–Dirac intra-atomic exchange coupling is responsible for the formation of the atomic spin moment and thus the strongest interaction in magnetism. Therefore, it is generally assumed thatExpand
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Bright circularly polarized soft X-ray high harmonics for X-ray magnetic circular dichroism
Significance The new ability to generate circularly polarized coherent (laser-like) beams of short wavelength high harmonics in a tabletop-scale setup is attracting intense interest worldwide.Expand
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Orbital-resolved spin model for thermal magnetization switching in rare-earth-based ferrimagnets
(Received 10 December 2012; revised manuscript received 10 June 2013; published 24 July 2013) The switching of rare-earth-based ferrimagnets triggered by thermal excitation is investigated on theExpand
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Beyond a phenomenological description of magnetostriction
Magnetostriction, the strain induced by a change in magnetization, is a universal effect in magnetic materials. Owing to the difficulty in unraveling its microscopic origin, it has been largelyExpand
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Conductivity engineering of graphene by defect formation
Transport measurements have revealed several exotic electronic properties of graphene. The possibility to influence the electronic structure and hence control the conductivity by adsorption or dopingExpand
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Stoner versus Heisenberg: Ultrafast exchange reduction and magnon generation during laser-induced demagnetization
Understanding how the electronic band structure of a ferromagnetic material is modified during laser-induced demagnetization on femtosecond time scales has been a long-standing question in condenseExpand
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Theory of out-of-equilibrium ultrafast relaxation dynamics in metals
Ultrafast laser excitation of a metal causes correlated, highly nonequilibrium dynamics of electronic and ionic degrees of freedom, which are however only poorly captured by the widely-usedExpand
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