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Title: Thermodynamically self-consistent non-stochastic micromagnetic model for the ferromagnetic state

In this work, a self-consistent thermodynamic approach to micromagnetism is presented. The magnetic degrees of freedom are modeled using the Landau-Lifshitz-Baryakhtar theory, which separates the different contributions to the magnetic damping, and thereby allows them to be coupled to the electron and phonon systems in a self-consistent way. We show that this model can quantitatively reproduce ultrafast magnetization dynamics in Nickel suggesting that in ferromagnetic metals the ultrafast angular momentum transfer happens via the relativistic spin-electron scattering.
Authors:
; ;  [1]
  1. DyNaMat Lab, Ghent University, Krijgslaan 281/S1, 9000 Ghent (Belgium)
Publication Date:
OSTI Identifier:
22350963
Resource Type:
Journal Article
Resource Relation:
Journal Name: Applied Physics Letters; Journal Volume: 105; Journal Issue: 16; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; ANGULAR MOMENTUM TRANSFER; DEGREES OF FREEDOM; ELECTRONS; MAGNETIZATION; NICKEL; RELATIVISTIC RANGE; SCATTERING; SPIN; STOCHASTIC PROCESSES