Superdiffusive Spin Transport as a Mechanism of Ultrafast Demagnetization
Top Cited Papers
- 9 July 2010
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 105 (2), 027203
- https://doi.org/10.1103/physrevlett.105.027203
Abstract
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 elapsed time and transport in space between multiple electronic collisions exactly, as well as the presence of several metal films in the sample. Solving the derived transport equation numerically we show that this mechanism accounts for the experimentally observed demagnetization within 200 fs in Ni, without the need to invoke any angular momentum dissipation channel. DOI: http://dx.doi.org/10.1103/PhysRevLett.105.027203 © 2010 The American Physical SocietyKeywords
Other Versions
This publication has 21 references indexed in Scilit:
- Explaining the paradoxical diversity of ultrafast laser-induced demagnetizationNature Materials, 2009
- Angular Momentum Conservation for Coherently Manipulated Spin Polarization in Photoexcited NiO: AnAb InitioCalculationPhysical Review Letters, 2009
- Ultrafast demagnetization of ferromagnetic transition metals: The role of the Coulomb interactionPhysical Review B, 2009
- Ultrafast Path for Optical Magnetization Reversal via a Strongly Nonequilibrium StatePhysical Review Letters, 2009
- Paradigm of the time-resolved magneto-optical Kerr effect for femtosecond magnetismNature Physics, 2009
- Coherent ultrafast magnetism induced by femtosecond laser pulsesNature Physics, 2009
- Control of speed and efficiency of ultrafast demagnetization by direct transfer of spin angular momentumNature Physics, 2008
- Femtosecond modification of electron localization and transfer of angular momentum in nickelNature Materials, 2007
- Unifying Ultrafast Magnetization DynamicsPhysical Review Letters, 2005
- Ultrafast Spin Dynamics in Ferromagnetic NickelPhysical Review Letters, 1996