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Taking all the magnon modes into account, we derive the skyrmion dynamics in response to a weak external drive. A skyrmion has rotational symmetry and the magnon modes can be characterized by an angular momentum. For a weak distortion of a…

材料科学 · 物理学 2017-07-20 Shi-Zeng Lin

Magnetic skyrmions are conventionally attributed to having zero mass. In contrast, we show that skyrmions confined to one-dimensional geometries generically acquire mass (inertia) due to the combined effects of the skyrmion Hall effect and…

其他凝聚态物理 · 物理学 2024-09-27 Koichiro Takahashi , Sergey S. Pershoguba , Jiadong Zang

Inertial mass of a skyrmion arising from spin-phonon interaction is computed exactly within a toy model of the magnetoelastic coupling in a ferromagnetic film. The mass scales as the square of the strength of the magnetoelastic coupling, as…

介观与纳米尺度物理 · 物理学 2020-08-19 D. Capic , E. M. Chudnovsky , D. A. Garanin

Magnon dynamics in skyrmion lattices have garnered significant interest due to their potential applications in topological magnonics. Existing theories often follow a single-momentum approach, assuming significant Dzyaloshinskii-Moriya…

介观与纳米尺度物理 · 物理学 2024-12-03 Doried Ghader , Bilal Jabakhanji

Deformations of skyrmions arising from the presence of more than one magnetic sublattice lead to their massive dynamics in ferrimagnets as compared to the massless dynamics in 2D ferromagnets. This results in the gyroscopic motion of…

介观与纳米尺度物理 · 物理学 2026-04-10 Dmitry A. Garanin , Eugene M. Chudnovsky

The texture in antiferromagnets hosting a topologically protected skyrmion can be viewed as two effectively coupled ferromagnetic skyrmions. Assuming rigid magnetic configurations, we show that this coupling results in an effective mass of…

介观与纳米尺度物理 · 物理学 2025-05-12 Michael Lau , Wolfgang Häusler , Michael Thorwart

Skyrmions and antiskyrmions in magnetic ultrathin films are characterised by a topological charge describing how the spins wind around their core. This topology governs their response to forces in the rigid core limit. However, when…

介观与纳米尺度物理 · 物理学 2018-03-05 Ulrike Ritzmann , Stephan von Malottki , Joo-Von Kim , Stefan Heinze , Jairo Sinova , Bertrand Dupé

Solitonic magnetic excitations such as domain walls and, specifically, skyrmionics enable the possibility of compact, high density, ultrafast,all-electronic, low-energy devices, which is the basis for the emerging area of skyrmionics. The…

Magnetic skyrmions are localized swirls of magnetization with a non-trivial topological winding number. This winding increases their robustness to superparamagnetism and gives rise to a myriad of novel dynamical properties, making them…

介观与纳米尺度物理 · 物理学 2020-04-29 Richard Brearton , Gerrit van der Laan , Thorsten Hesjedal

We study theoretically the dynamics of magnons in the presence of a single skyrmion in chiral magnets featuring Dzyaloshinskii-Moriya interaction. We show by micromagnetic simulations that the scattering process of magnons by a skyrmion can…

强关联电子 · 物理学 2014-02-18 Junichi Iwasaki , Aron J. Beekman , Naoto Nagaosa

We study the dynamics of skyrmions in a metallic chiral magnet. First we show that skyrmions can be created dynamically by destabilizing the ferromagnetic background state through a spin polarized current. We then treat skyrmions as rigid…

材料科学 · 物理学 2014-01-14 Shi-Zeng Lin , Charles Reichhardt , Cristian D. Batista , Avadh Saxena

Magnetic skyrmions are topologically-distinct swirls of magnetic moments which display particle-like behaviour, including the ability to undergo thermally-driven diffusion. In this paper we study the thermally activated motion of arrays of…

介观与纳米尺度物理 · 物理学 2021-11-03 Yifan Zhou , Rhodri Mansell , Tapio Ala-Nissila , Sebastiaan van Dijken

Topological magnetic solitons, such as skyrmions, exhibit intriguing particle-like properties that make them attractive for fundamental research and practical applications. While many magnetic systems can host skyrmions as statically stable…

强关联电子 · 物理学 2025-01-22 Vladyslav M. Kuchkin , Bruno Barton-Singer , Pavel F. Bessarab , Nikolai S. Kiselev

Skyrmions are vortex-like textures of magnetic moments found in some magnetically ordered materials. Here we describe the origin of the skyrmion and discuss the experimental realization of skyrmions in magnetic materials, the dynamic…

强关联电子 · 物理学 2022-02-23 Tom Lancaster

Skyrmions are topologically protected entities in magnetic materials which have the potential to be used in spintronics for information storage and processing. However, Skyrmions in ferromagnets have some intrinsic difficulties which must…

介观与纳米尺度物理 · 物理学 2016-04-11 Joseph Barker , Oleg A. Tretiakov

Magnetic skyrmions are topological spin textures promising for future high-density and nonvolatile memory. It is crucial to understand the current-driven skyrmion dynamics in the presence of deformation, of which an analytical model,…

介观与纳米尺度物理 · 物理学 2022-01-13 Zehan Chen , Xichao Zhang , Yan Zhou , Qiming Shao

Magnetic skyrmions are small swirling topological defects in the magnetization texture stabilized by the protection due to their topology. In most cases they are induced by chiral interactions between atomic spins existing in…

材料科学 · 物理学 2017-12-21 Albert Fert , Nicolas Reyren , Vincent Cros

Magnetic vortices and skyrmions represent two fundamental classes of topological spin textures in ferromagnetic systems, distinguished by their unique stabilization mechanisms and degrees of freedom. Vortices, characterized by circular…

计算物理 · 物理学 2025-03-21 Haobing Zhang , Xintao Fan , Weiwei Wang

Topological magnetic textures - like skyrmions - have become a major player in the design of next-generation magnetic storage technology due to their stability and the control of their motion by ultra-low current densities. A major…

强关联电子 · 物理学 2017-09-26 Karin Everschor-Sitte , Matthias Sitte , Thierry Valet , Ar. Abanov , Jairo Sinova

Skyrmions are topological structures defined by a winding vector configuration that yields a quantized topological charge. In magnetic materials, skyrmions manifest as stable, mobile spin textures, positioning them at the forefront of…

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