Ultrafast Spin Dynamics in Multisublattice Magnets (Articolo in rivista)

Type
Label
  • Ultrafast Spin Dynamics in Multisublattice Magnets (Articolo in rivista) (literal)
Anno
  • 2012-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1103/PhysRevLett.108.057202 (literal)
Alternative label
  • J. H. Mentink1, J. Hellsvik2,3, D. V. Afanasiev4, B. A. Ivanov4, A. Kirilyuk1, A. V. Kimel1, O. Eriksson2, M. I. Katsnelson1, and Th. Rasing1 (2012)
    Ultrafast Spin Dynamics in Multisublattice Magnets
    in Physical review letters (Print)
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • J. H. Mentink1, J. Hellsvik2,3, D. V. Afanasiev4, B. A. Ivanov4, A. Kirilyuk1, A. V. Kimel1, O. Eriksson2, M. I. Katsnelson1, and Th. Rasing1 (literal)
Pagina inizio
  • 57202 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#url
  • http://link.aps.org/doi/10.1103/PhysRevLett.108.057202 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 108 (literal)
Rivista
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#pagineTotali
  • 5 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroFascicolo
  • 5 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • 1Radboud University Nijmegen, Institute of Molecules and Materials, Heyendaalseweg 135, 6525 AJ Nijmegen, The Netherlands 2Department of Physics and Astronomy, Uppsala University, Box 516, SE-751 20, Uppsala, Sweden 3Consiglio Nazionale delle Ricerche-Superconducting and Innovative Materials and Devices (CNR-SPIN), 67100 L'Aquila, Italy 4Institute of Magnetism, NASU, 03142 Kiev, Ukraine (literal)
Titolo
  • Ultrafast Spin Dynamics in Multisublattice Magnets (literal)
Abstract
  • We propose a general theoretical framework for ultrafast laser-induced spin dynamics in multisublattice magnets. We distinguish relaxation of relativistic and exchange origin and show that when the former dominates, nonequivalent sublattices have distinct dynamics despite their strong exchange coupling. Even more interesting, in the exchange dominated regime sublattices can show highly counterintuitive transitions between parallel and antiparallel alignment. This allows us to explain recent experiments with antiferromagnetically coupled sublattices, and predict that such transitions are possible with ferromagnetic coupling as well. In addition, we predict that exchange relaxation enhances the demagnetization speed of both sublattices only when they are antiferromagnetically coupled (literal)
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