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  Competing spin transfer and dissipation at Co/Cu(001) interfaces on femtosecond timescales

Chen, J., Bovensiepen, U., Eschenlohr, A., Müller, T., Elliott, P., Gross, E. K. U., et al. (2019). Competing spin transfer and dissipation at Co/Cu(001) interfaces on femtosecond timescales. Physical Review Letters, 122(6): 067202. doi:10.1103/PhysRevLett.122.067202.

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PhysRevLett.122.067202.pdf (Publisher version), 420KB
 
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https://doi.org/10.1103/PhysRevLett.122.067202 (Publisher version)
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 Creators:
Chen, J.1, Author
Bovensiepen, U.1, Author
Eschenlohr, A.1, Author
Müller, T.2, Author
Elliott, P.2, Author
Gross, E. K. U.2, Author              
Dewhurst, J. K.2, Author              
Sharma, S.2, Author
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1External Organizations, ou_persistent22              
2Max Planck Institute of Microstructure Physics, Max Planck Society, ou_2415691              

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 Abstract: By combining interface-sensitive nonlinear magneto-optical experiments with femtosecond time resolution and ab initio time-dependent density functional theory, we show that optically excited spin dynamics at Co/Cu(001) interfaces proceeds via spin-dependent charge transfer and back transfer between Co and Cu. This ultrafast spin transfer competes with dissipation of spin angular momentum mediated by spin-orbit coupling already on sub 100 fs timescales. We thereby identify the fundamental microscopic processes during laser-induced spin transfer at a model interface for technologically relevant ferromagnetic heterostructures.

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 Dates: 2019-02-122019-02-15
 Publication Status: Published in print
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 Identifiers: BibTex Citekey: P13617
DOI: 10.1103/PhysRevLett.122.067202
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Title: Physical Review Letters
  Abbreviation : Phys. Rev. Lett.
Source Genre: Journal
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Publ. Info: Woodbury, N.Y. : American Physical Society
Pages: - Volume / Issue: 122 (6) Sequence Number: 067202 Start / End Page: - Identifier: ISSN: 0031-9007
CoNE: https://pure.mpg.de/cone/journals/resource/954925433406_1