Plasmon-induced demagnetization and magnetic switching in nickel nanoparticle arrays
arXiv:1711.02943 · doi:10.1063/1.5012857
Abstract
We report on the manipulation of magnetization by femtosecond laser pulses in a periodic array of cylindrical nickel nanoparticles. By performing experiments at different wavelength, 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.
4 pages, 4 figures
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- Coupling phenomena and collective effects in resonant meta-molecules supporting plasmonic and magnetic functionalities: a review
- Strong microwave photon-magnon coupling in multiresonant dielectric antennas (Perspective)
- One-dimensional optomagnonic microcavities for selective excitation of perpendicular standing spin waves
- High magnetoresistance of hexagonal boron nitride-graphene heterostructure-based MTJ through excited-electron transmission
- Plasmonics of non-noble metals