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@ARTICLE{Gupta:593252,
author = {Gupta, R. and Cosco, F. and Malik, Vivek Kumar and Chen, X.
and Saha, S. and GHOSH, ANAGHA and Pohlmann, Tobias and
Mardegan, J. R. L. and Francoual, Sonia and Stefanuik, R.
and Chau Soederstroem, Johan and Sanyal, B. and Karis, O.
and Svedlindh, Peter and Oppeneer, Peter and Knut, R.},
title = {{E}lement-resolved evidence of superdiffusive spin current
arising from ultrafast demagnetization process},
journal = {Physical review / B},
volume = {108},
number = {6},
issn = {2469-9950},
address = {Woodbury, NY},
publisher = {Inst.},
reportid = {PUBDB-2023-05352},
pages = {064427},
year = {2023},
abstract = {Using element-specific measurements of the ultrafast
demagnetization of Ru/Fe$_{65}$Co$_{35}$ 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.},
cin = {DOOR ; HAS-User / FS-PETRA-S},
ddc = {530},
cid = {I:(DE-H253)HAS-User-20120731 /
I:(DE-H253)FS-PETRA-S-20210408},
pnm = {632 - Materials – Quantum, Complex and Functional
Materials (POF4-632) / 6G3 - PETRA III (DESY) (POF4-6G3) /
FS-Proposal: I-20200894 EC (I-20200894-EC) / s-NEBULA -
Novel Spin-Based Building Blocks for Advanced TeraHertz
Applications (863155) / SWEDEN-DESY - SWEDEN-DESY
Collaboration $(2020_Join2-SWEDEN-DESY)$},
pid = {G:(DE-HGF)POF4-632 / G:(DE-HGF)POF4-6G3 /
G:(DE-H253)I-20200894-EC / G:(EU-Grant)863155 /
$G:(DE-HGF)2020_Join2-SWEDEN-DESY$},
experiment = {EXP:(DE-H253)P-P09-20150101},
typ = {PUB:(DE-HGF)16},
doi = {10.1103/PhysRevB.108.064427},
url = {https://bib-pubdb1.desy.de/record/593252},
}