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Showing 1–11 of 11 results
Advanced filters: Author: Alexander A. Serga Clear advanced filters

  • 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

  • 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

  • Exploration of magnon Bose–Einstein condensate (BEC) may enable intriguing applications in magnonic devices. Here the authors show experimentally the condensed magnons forming compact humps of BEC density can propagate many hundreds of micrometers in the form of Bogoliubov waves.

    • Dmytro A. Bozhko
    • Alexander J. E. Kreil
    • Burkard Hillebrands
    ResearchOpen Access
    Nature Communications
    Volume: 10, P: 1-9

  • 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

  • Studies of supercurrent phenomena, such as superconductivity and superfluidity, are usually restricted to cryogenic temperatures, but evidence suggests that a magnon supercurrent can be excited in a Bose–Einstein magnon condensate at room temperature.

    • Dmytro A. Bozhko
    • Alexander A. Serga
    • Burkard Hillebrands
    Research
    Nature Physics
    Volume: 12, P: 1057-1062

  • 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

  • Fast and energy-efficient control of magnon transport in magnonic crystals is one of the main challenges of modern magnonics. High performances for voltage control are expected but have so far only been predicted theoretically and investigated numerically. In this paper, the authors report of the first experimental realization of voltage-controlled magnon currents in a dynamic electromagnonic crystal.

    • Alexey B. Ustinov
    • Andrei V. Drozdovskii
    • Boris A. Kalinikos
    ResearchOpen Access
    Communications Physics
    Volume: 2, P: 1-7

  • The field of magnonics studies the dynamic excitations of a magnetically ordered material. This Review surveys coherent magnonics, discussing the design of spin-wave devices and the use of magnon Bose–Einstein condensates to enable a broad range of applications.

    • Philipp Pirro
    • Vitaliy I. Vasyuchka
    • Burkard Hillebrands
    Reviews
    Nature Reviews Materials
    Volume: 6, P: 1114-1135

  • Adding to the significant interest in quantum computing schemes, this work focuses on classical analogs for which entanglement is not required. Specifically, this work demonstrates through micromagnetic numerical simulations the use of wavevector-selective parametric pumping to controllably initialize and manipulate a room-temperature two-component magnon condensate on the Bloch sphere and reveals the possibility of Rabi-like oscillations in the wavevector domain.

    • Morteza Mohseni
    • Vitaliy I. Vasyuchka
    • Burkard Hillebrands
    ResearchOpen Access
    Communications Physics
    Volume: 5, P: 1-8

  • 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