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Showing 1–9 of 9 results
Advanced filters: Author: Vladislav E. Demidov Clear advanced filters

  • Dynamical effects driven by pure spin currents in magnetic nanostructures have so far been limited to spatially confined excitations, limiting potential magnonic applications. Here, the authors demonstrate the generation of coherent propagating spin waves in NiFe films induced by pure spin currents.

    • Vladislav E. Demidov
    • Sergei Urazhdin
    • Sergej O. Demokritov
    ResearchOpen Access
    Nature Communications
    Volume: 7, P: 1-6

  • Nonlinear damping enhancement imposes strict limitations on the operation and efficiency of magnetic nano-devices. Here the authors show that nonlinear damping can be controlled by the ellipticity of magnetization precession, which provides a route for the implementation of efficient active spintronic and magnonic devices driven by spin current.

    • Boris Divinskiy
    • Sergei Urazhdin
    • Vladislav E. Demidov
    ResearchOpen Access
    Nature Communications
    Volume: 10, P: 1-7

  • Silicon-ion-implanted yttrium iron garnet technology enables low-loss and dispersion-tunable magnonic waveguides with spin-wave decay lengths of >100 µm, which pave the way for large-scale, energy-efficient magnonic integrated circuits.

    • Jannis Bensmann
    • Robert Schmidt
    • Rudolf Bratschitsch
    ResearchOpen Access
    Nature Materials
    P: 1-7

  • The dynamical processes associated with the magnetization of a material can be drastically altered by the application of a spin current. This study now demonstrates the feasibility of selectively exciting coherent auto-oscillation modes in magnetic nanostructures.

    • Vladislav E. Demidov
    • Sergei Urazhdin
    • Sergej O. Demokritov
    Research
    Nature Materials
    Volume: 11, P: 1028-1031

  • Spin current, that is, the flow of angular momentum without charge transfer, may be used in efficient spintronics devices. One problem is that spin current tends to decrease, owing to spin–orbit interaction. It is now shown that through interaction with spin waves it is possible to reverse this effect and enhance the spin current back.

    • Hidekazu Kurebayashi
    • Oleksandr Dzyapko
    • Sergej O. Demokritov
    Research
    Nature Materials
    Volume: 10, P: 660-664

  • A spin-polarized current induces a spin torque on the magnetization of a ferromagnetic film, which according to theory leads to spin-wave emissions. These spin waves have now been observed with a mapping technique that shows a highly directional emission. The results are of key importance to understanding the physics of spin waves and their possible use in spintronic devices.

    • Vladislav E. Demidov
    • Sergei Urazhdin
    • Sergej O. Demokritov
    Research
    Nature Materials
    Volume: 9, P: 984-988

  • In ferromagnetic thin films, spin torque applied to nanometre-scale areas excites localized magnetic self-oscillations, or reduces net magnetization if applied uniformly. Here, Duan et al.show how 1D geometrical confinement allows for coherent self-oscillations to be excited over extended length scales.

    • Zheng Duan
    • Andrew Smith
    • Ilya N. Krivorotov
    Research
    Nature Communications
    Volume: 5, P: 1-7