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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

  • Czech description

Classification

  • Type

    J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database

  • CEP classification

  • 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

  • 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