Tailoring femtosecond hot-electron pulses for ultrafast spin manipulation
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F20%3A10419188" target="_blank" >RIV/00216208:11320/20:10419188 - isvavai.cz</a>
Result on the web
<a href="https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=MgfZZnd0-3" target="_blank" >https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=MgfZZnd0-3</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1063/5.0018502" target="_blank" >10.1063/5.0018502</a>
Alternative languages
Result language
angličtina
Original language name
Tailoring femtosecond hot-electron pulses for ultrafast spin manipulation
Original language description
We have measured the hot-electron-induced demagnetization of a [Co/Pt](2) multilayer in M(x nm)/Cu(100nm)/[Co(0.6nm)/Pt(1.1nm)](2) samples depending on the nature of the capping layer M and its thickness x. We found out that a Pt layer is more efficient than [Co/Pt](X), Cu, or MgO layers in converting infrared (IR) photon pulses into hot-electron pulses at a given laser power. We also found out that the maximum relative demagnetization amplitude is achieved for M(x) = Pt (7nm). Our experimental results show qualitative agreement with numerical simulations based on the superdiffusive spin transport model. We concluded that the maximum relative demagnetization amplitude, which corresponds to the highest photon conversion into hot electrons, is an interplay between the IR penetration depth and the hot-electron inelastic mean free path within the capping layer.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10302 - Condensed matter physics (including formerly solid state physics, supercond.)
Result continuities
Project
<a href="/en/project/GA18-07172S" target="_blank" >GA18-07172S: Topical problems in theory of manipulation of spin polarization in bulk and layered systems</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2020
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Applied Physics Letters
ISSN
0003-6951
e-ISSN
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Volume of the periodical
117
Issue of the periodical within the volume
22
Country of publishing house
US - UNITED STATES
Number of pages
4
Pages from-to
222408
UT code for WoS article
000597337100001
EID of the result in the Scopus database
2-s2.0-85097332078