Plasmon-induced demagnetization and magnetic switching in nickel nanoparticle arrays

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We report on the manipulation of magnetization by femtosecond laser pulses in a periodic array of cylindrical nickel nanoparticles. By performing experiments at different wavelengths, we show that the excitation of collective surface plasmon resonances triggers demagnetization in zero field or magnetic switching in a small perpendicular field. Both magnetic effects are explained by plasmon-induced heating of the nickel nanoparticles to their Curie temperature. Model calculations confirm the strong correlation between the excitation of surface plasmon modes and laser-induced changes in magnetization.

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AlkuperäiskieliEnglanti
Artikkeli072406
Sivut1-5
JulkaisuApplied Physics Letters
Vuosikerta112
Numero7
TilaJulkaistu - 12 helmikuuta 2018
OKM-julkaisutyyppiA1 Julkaistu artikkeli, soviteltu

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