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Atom-specific magno...
Atom-specific magnon driven ultrafast spin dynamics in Fe1-xNix alloys
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- Jana, Somnath (author)
- Uppsala universitet,Molekyl- och kondenserade materiens fysik
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- Knut, Ronny (author)
- Uppsala universitet,Molekyl- och kondenserade materiens fysik
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- Delczeg-Czirjak, Erna Krisztina (author)
- Uppsala universitet,Materialteori
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- Malik, Rameez Saeed, 1987- (author)
- Uppsala universitet,Molekyl- och kondenserade materiens fysik
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- Stefanuik, Robert (author)
- Uppsala universitet,Molekyl- och kondenserade materiens fysik
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- Chimata, Raghuveer (author)
- Uppsala universitet,Materialteori
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- Phuyal, Dibya (author)
- Uppsala universitet,Molekyl- och kondenserade materiens fysik
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- Kamalakar, M. Venkata (author)
- Uppsala universitet,Molekyl- och kondenserade materiens fysik
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- Akansel, Serkan (author)
- Uppsala universitet,Fasta tillståndets fysik
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- Primetzhofer, Daniel (author)
- Uppsala universitet,Tillämpad kärnfysik
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- Ahlberg, Martina, 1980- (author)
- Department of Physics, University of Gothenburg
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- Söderström, Johan, 1978- (author)
- Uppsala universitet,Molekyl- och kondenserade materiens fysik
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- Åkerman, Johan (author)
- Department of Physics, University of Gothenburg; KTH Royal Institute of Technology
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- Svedlindh, Peter (author)
- Uppsala universitet,Fasta tillståndets fysik
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- Eriksson, Olle, 1960- (author)
- Uppsala universitet,Fasta tillståndets fysik
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- Karis, Olof (author)
- Uppsala universitet,Molekyl- och kondenserade materiens fysik
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(creator_code:org_t)
- English.
- Related links:
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https://urn.kb.se/re...
Abstract
Subject headings
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- By employing element specific ultrafast spectroscopy in Fe1-xNix alloys alloys, we find a composition dependent effect in the demagnetization that we relate to changes in electron-magnon scattering. In all six measured alloys of different composition, the demagnetization of Ni compared to Fe exhibits a delay, an effect which we find is inherent in alloys but not in elemental Fe and Ni. Using a model based on electron-magnon scattering, we extract a spin-wave stiffness from all alloys that show excellent agreement with values obtained from other techniques. The result establishes the atom-specific sd-exchange induced magnon generation as an underlying mechanism during ultrafast demagnetization in Fe1-xNix alloys
Subject headings
- NATURVETENSKAP -- Fysik -- Den kondenserade materiens fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Condensed Matter Physics (hsv//eng)
Keyword
- Physics with spec. in Atomic, Molecular and Condensed Matter Physics
- Fysik med inriktning mot atom- molekyl- och kondenserande materiens fysik
Publication and Content Type
- vet (subject category)
- ovr (subject category)
To the university's database
- By the author/editor
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Jana, Somnath
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Knut, Ronny
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Delczeg-Czirjak, ...
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Malik, Rameez Sa ...
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Stefanuik, Rober ...
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Chimata, Raghuve ...
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Phuyal, Dibya
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Kamalakar, M. Ve ...
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Akansel, Serkan
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Primetzhofer, Da ...
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Ahlberg, Martina ...
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Söderström, Joha ...
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Åkerman, Johan
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Svedlindh, Peter
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Eriksson, Olle, ...
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Karis, Olof
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- About the subject
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Physical Science ...
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and Condensed Matter ...
- By the university
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Uppsala University