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Showing 1–8 of 8 results
Advanced filters: Author: A. Stupakiewicz Clear advanced filters

  • Increasing the speed of magnetization switching is an obvious pathway to improve spintronic device performance. However, very fast magnetization switching is accompanied by instabilities. Here, Gidding et al study these instabilities using optical pumping, and show that instability generated spin-waves can achieve a high enough amplitude to drive switching of the magnetization, with a distinctive coherent pattern.

    • M. Gidding
    • T. Janssen
    • A. Kirilyuk
    ResearchOpen Access
    Nature Communications
    Volume: 14, P: 1-6

  • Toggle switching refers to the switching of magnetization induced by a train of ultrashort laser pulses. The high speed make such switching in extremely promising for devices, however, the underlying toggle switching mechanism in metals is due to heating, and thus has a downside of dissipation. Here, Zalewski et al demonstrate ultrafast ‘cold’ toggle switching, with a mechanism that does not rely on heating in dielectric Cobalt doped Yittrium Iron Garnet.

    • T. Zalewski
    • A. Maziewski
    • A. Stupakiewicz
    ResearchOpen Access
    Nature Communications
    Volume: 15, P: 1-8

  • Holography recreates both the amplitude and wave front of a three dimensional object, meaning that the observer perceives the image in the nearly same way as they would the true object. Creating such holographic images is challenging computationally, and requires extremely fast display update. Here, the authors combine a fast memoryless computation algorithm with the ultra-rapid writing based on all-optical switching of a ferrimagnetic film.

    • M. Makowski
    • J. Bomba
    • A. Stupakiewicz
    ResearchOpen Access
    Nature Communications
    Volume: 13, P: 1-11

  • The authors computationally and experimentally derive the selection rules on polarization, wavelengths, and magnetic damping for non-dissipative аll-optical magnetic recording with femtosecond laser pulses in Co-doped garnet film. The suggested approach is based on a multiple resonant pumping of localized d-electron transitions.

    • A. Stupakiewicz
    • K. Szerenos
    • A. V. Kimel
    ResearchOpen Access
    Nature Communications
    Volume: 10, P: 1-7

  • Resonant excitation of phonons by a laser pulse switches the magnetization of a thin yttrium iron garnet film. This particular combination of longitudinal optical phonons results in a quadrupolar pattern, but this could be tailored in the future.

    • A. Stupakiewicz
    • C. S. Davies
    • A. Kirilyuk
    Research
    Nature Physics
    Volume: 17, P: 489-492