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Showing 1–16 of 16 results
Advanced filters: Author: Andrii V. Chumak Clear advanced filters

  • Signal processing by time reversal has thus far only been realized through nonlinear mechanisms. The authors describe an all-linear, and thus low-power, time-reversal process based on frequency inversion in a dynamically controlled artificial periodic structure, a dynamic magnonic crystal.

    • Andrii V. Chumak
    • Vasil S. Tiberkevich
    • Burkard Hillebrands
    ResearchOpen Access
    Nature Communications
    Volume: 1, P: 1-5

  • A disturbance in the local magnetic order can propagate across a material just like a wave. Chumak et al.now demonstrate a transistor operating on a single quantum of these so-called spin waves, known as a magnon, which could be a central element for magnetic-material-based information processing.

    • Andrii V. Chumak
    • Alexander A. Serga
    • Burkard Hillebrands
    ResearchOpen Access
    Nature Communications
    Volume: 5, P: 1-8

  • A device that consists of a square array of independent direct current loops on top of a film of yttrium iron garnet can generate a complex reconfigurable magnetic medium and be used to solve inverse-design problems experimentally without the use of numerical simulations.

    • Noura Zenbaa
    • Claas Abert
    • Andrii V. Chumak
    Research
    Nature Electronics
    Volume: 8, P: 106-115

  • A repeater takes an input signal and retransmits is, and a vital component for extending the range of signals. Here, Wang et al. demonstrate a magnon repeater, based on the bistable switching between low and high amplitude spin-waves.

    • Qi Wang
    • Roman Verba
    • Andrii V. Chumak
    ResearchOpen Access
    Nature Communications
    Volume: 15, P: 1-7

  • A new method to form Bose–Einstein condensates of quasiparticles based on the rapid decrease in the phonon temperature was proposed and shown experimentally.

    • Michael Schneider
    • Thomas Brächer
    • Andrii V. Chumak
    Research
    Nature Nanotechnology
    Volume: 15, P: 457-461

  • The periodic modulation of the magnetic properties of magnonic crystals controls the flow of spin waves. An optical method is now shown that can produce such modulations by heating, which can be reprogrammed during operation.

    • Marc Vogel
    • Andrii V. Chumak
    • Georg von Freymann
    Research
    Nature Physics
    Volume: 11, P: 487-491

  • In contrast to real atoms, Bose–Einstein condensation of quasi-particles does not require low temperature, but is obtained via external pumping. Here, the authors show an unexpected transitional dynamics of a Bose–Einstein condensate of magnons due to a nonlinear evaporative supercooling mechanism.

    • Alexander A. Serga
    • Vasil S. Tiberkevich
    • Burkard Hillebrands
    Research
    Nature Communications
    Volume: 5, P: 1-8

  • A magnonic directional coupler with submicrometre dimensions could be used as a building block for integrated magnonic devices, such as half-adders, that have low energy consumption and small footprint.

    • Q. Wang
    • M. Kewenig
    • A. V. Chumak
    Research
    Nature Electronics
    Volume: 3, P: 765-774

  • Inverse design is a recent development in photonics, where by locally controlling the refractive index in a matrix, nearly any information processing functionality can be achieved. Here, Wang et al. present a scheme for inverse design for spin-waves, magnons, which have a variety of unique advantages, such as short wavelength, and large non-linearity.

    • Qi Wang
    • Andrii V. Chumak
    • Philipp Pirro
    ResearchOpen Access
    Nature Communications
    Volume: 12, P: 1-9

  • By modulating the dimensions of magnonic crystals, their transmission properties in the microwave regime may be tuned and so applications including information processing are anticipated. The authors here show reflection-less spin-wave propagation may be realised in a width-modulated waveguide.

    • Pascal Frey
    • Aleksei A. Nikitin
    • Alexander A. Serga
    ResearchOpen Access
    Communications Physics
    Volume: 3, P: 1-7