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  Element specificity of transient extreme ultraviolet magnetic dichroism

Dewhurst, J. K., Willems, F., Elliott, P., Li, Q. Z., von Korff Schmising, C., Strüber, C., et al. (2020). Element specificity of transient extreme ultraviolet magnetic dichroism. Physical Review Letters, 124(7): 077203. doi:10.1103/PhysRevLett.124.077203.

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PhysRevLett.124.077203.pdf (Publisher version), 563KB
 
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https://doi.org/10.1103/PhysRevLett.124.077203 (Publisher version)
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 Creators:
Dewhurst, J. K.1, Author              
Willems, F.2, Author
Elliott, P.2, Author
Li, Q. Z.2, Author
von Korff Schmising, C.2, Author
Strüber, C.2, Author
Engel, D. W.2, Author
Eisebitt, S.2, Author
Sharma, S.2, Author
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1Max Planck Institute of Microstructure Physics, Max Planck Society, ou_2415691              
2External Organizations, ou_persistent22              

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 Abstract: In this work we combine theory and experiment to study transient magnetic circular dichroism (TRMCD) in the extreme ultraviolet spectral range in bulk Co and CoPt. We use the ab initio method of real-time time-dependent density functional theory to simulate the magnetization dynamics in the presence of short laser pulses. From this we demonstrate how TRMCD may be calculated using an approximation to the excited-state linear response. We apply this approximation to Co and CoPt and show computationally that element-specific dynamics of the local spin moments can be extracted from the TRMCD in the extreme ultraviolet energy range, as is commonly assumed. We then compare our theoretical prediction for the TRMCD for CoPt with experimental measurement and find excellent agreement at many different frequencies including the M23 edge of Co and N67 and O23 edges of Pt.

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 Dates: 2020-02-21
 Publication Status: Published online
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 Identifiers: BibTex Citekey: P13887
DOI: 10.1103/PhysRevLett.124.077203
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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: 124 (7) Sequence Number: 077203 Start / End Page: - Identifier: ISSN: 0031-9007
CoNE: https://pure.mpg.de/cone/journals/resource/954925433406_1