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Element-resolved ev...
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Gupta, RahulUppsala University
(author)
Element-resolved evidence of superdiffusive spin current arising from ultrafast demagnetization process
- Article/chapterEnglish2023
Publisher, publication year, extent ...
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American Physical Society,2023
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Numbers
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LIBRIS-ID:oai:DiVA.org:uu-511376
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https://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-511376URI
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https://doi.org/10.1103/PhysRevB.108.064427DOI
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https://lup.lub.lu.se/record/4157d232-a427-45f0-97d1-034db99106dfURI
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Language:English
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Summary in:English
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Subject category:ref swepub-contenttype
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Subject category:art swepub-publicationtype
Notes
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Using element-specific measurements of the ultrafast demagnetization of Ru/Fe65Co35 hetero-structures, we show that Ru can exhibit a significant magnetic contrast (3% asymmetry) resulting from ultrafast spin currents emanating from the demagnetization process of the FeCo layer. We use this magnetic contrast to investigate how superdiffusive spin currents are affected by the doping of heavy elements in the FeCo layer. We find that the spin currents are strongly suppressed, and that the recovery process in Ru slows down by Re doping. This is in accordance with a change in interface reflectivity of spin currents as found by the superdiffusive spin transport model.
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Added entries (persons, corporate bodies, meetings, titles ...)
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Cosco, F.Uppsala University
(author)
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Malik, R. S.Uppsala University,Ashoka University
(author)
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Chen, X.Uppsala University,Southern University of Science and Technology
(author)
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Saha, SusmitaGerman Electron Synchrotron (DESY)
(author)
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Ghosh, A.Uppsala University,Lund University,Lunds universitet,MAX IV-laboratoriet,MAX IV Laboratory(Swepub:lu)an8403gh
(author)
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Pohlmann, T.German Electron Synchrotron (DESY)
(author)
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Mardegan, J. R. L.German Electron Synchrotron (DESY)
(author)
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Francoual, S.
(author)
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Stefanuik, Robert
(author)
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Söderström, JohanUppsala University
(author)
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Sanyal, BiplabUppsala University
(author)
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Karis, OlofUppsala University
(author)
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Svedlindh, PeterUppsala University
(author)
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Oppeneer, P. M.Uppsala University
(author)
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Knut, RonnyUppsala University,Uppsala universitet,Energimaterialens fysik(Swepub:uu)ronku443
(author)
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Uppsala UniversityAshoka University
(creator_code:org_t)
Related titles
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In:Phys. Rev. B: American Physical Society108:6
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In:Physical Review B: American Physical Society108:62469-9950
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Gupta, Rahul
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Cosco, F.
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Malik, R. S.
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Chen, X.
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Saha, Susmita
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Ghosh, A.
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Pohlmann, T.
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Mardegan, J. R. ...
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Francoual, S.
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Stefanuik, Rober ...
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Söderström, Joha ...
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Sanyal, Biplab
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Karis, Olof
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Svedlindh, Peter
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Oppeneer, P. M.
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Knut, Ronny
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NATURAL SCIENCES
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Uppsala University
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Lund University