Sökning: onr:"swepub:oai:DiVA.org:uu-169960" >
Ultrafast Spin Dyna...
Ultrafast Spin Dynamics in Multisublattice Magnets
-
Mentink, J. H. (författare)
-
- Hellsvik, Johan (författare)
- Uppsala universitet,Materialteori
-
Afanasiev, D. V. (författare)
-
visa fler...
-
Ivanov, B. A. (författare)
-
Kirilyuk, A. (författare)
-
Kimel, A. V. (författare)
-
- Eriksson, Olle (författare)
- Uppsala universitet,Materialteori
-
Katsnelson, M. I. (författare)
-
Rasing, Th. (författare)
-
visa färre...
-
(creator_code:org_t)
- 2012
- 2012
- Engelska.
-
Ingår i: Physical Review Letters. - 0031-9007 .- 1079-7114. ; 108:5, s. 057202-
- Relaterad länk:
-
https://urn.kb.se/re...
-
visa fler...
-
https://doi.org/10.1...
-
visa färre...
Abstract
Ämnesord
Stäng
- 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.
Ämnesord
- NATURVETENSKAP -- Fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences (hsv//eng)
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
Hitta via bibliotek
Till lärosätets databas