منابع مشابه
Topological Quasiparticles: Magnetic Skyrmions
Magnetic skyrmions are topologically distinct spin textures and can be stable with quasi-particle like behavior, such that they can be manipulated with very low electric currents. This makes them interesting for extreme low-power information technologies [1], where data is envisioned to be encoded in topological charges, instead of electronic charges as in conventional semiconducting devices. U...
متن کاملDynamically stabilized magnetic skyrmions
Magnetic skyrmions are topologically non-trivial spin textures that manifest themselves as quasiparticles in ferromagnetic thin films or noncentrosymmetric bulk materials. So far attention has focused on skyrmions stabilized either by the Dzyaloshinskii-Moriya interaction (DMI) or by dipolar interaction, where in the latter case the excitations are known as bubble skyrmions. Here we demonstrate...
متن کاملUltrafast optical excitation of magnetic skyrmions
Magnetic skyrmions in an insulating chiral magnet Cu2OSeO3 were studied by all-optical spin wave spectroscopy. The spins in the conical and skyrmion phases were excited by the impulsive magnetic field from the inverse-Faraday effect, and resultant spin dynamics were detected by using time-resolved magneto-optics. Clear dispersions of the helimagnon were observed, which is accompanied by a disti...
متن کاملPerpendicular reading of single confined magnetic skyrmions
Thin-film sub-5 nm magnetic skyrmions constitute an ultimate scaling alternative for future digital data storage. Skyrmions are robust noncollinear spin textures that can be moved and manipulated by small electrical currents. Here we show here a technique to detect isolated nanoskyrmions with a current perpendicular-to-plane geometry, which has immediate implications for device concepts. We exp...
متن کاملAn Inside View of Magnetic Skyrmions
A magnetic skyrmion is the smallest possible perturbation to a uniform magnet: a pointlike region of reversed magnetization, surrounded by a whirling twist of spins. Such skyrmions are quasiparticles—they do not exist in the absence of a magnetic state–and they give rise to emergent electrodynamics that cannot be simply described by Maxwell’s equations. The particles are also attractive candida...
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ژورنال
عنوان ژورنال: Proceedings
سال: 2019
ISSN: 2504-3900
DOI: 10.3390/ecea-5-06678