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We show that continuous and spin-lattice models of chiral ferro- and antiferromagnets provide the existence of an infinite number of stable soliton solutions of any integer topological charge. A detailed description of the morphology of new…

强关联电子 · 物理学 2019-03-01 F. N. Rybakov , N. S. Kiselev

In this article we use chiral domain walls to manipulate and trap magnetic skyrmion quasi-particles in chiral magnetic materials such as ultrathin Co/Pt films. The magnetic skyrmions can be orientated such that their interaction with domain…

介观与纳米尺度物理 · 物理学 2025-02-14 Paul Leask

We predict the occurrence of metastable skyrmionic spin structures such as antiskyrmions and higher-order skyrmions in ultra-thin transition-metal films at surfaces using Monte Carlo simulations based on a spin Hamiltonian parametrized from…

材料科学 · 物理学 2016-06-22 Bertrand Dupé , Christian N. Kruse , Tobias Dornheim , Stefan Heinze

A mgnetic bimeron is an in-plane topological counterpart of a magnetic skyrmion. Despite the topological equivalence, their statics and dynamics could be distinct, making them attractive from the perspectives of both physics and spintronic…

介观与纳米尺度物理 · 物理学 2020-11-16 X. Li , L. Shen , Y. Bai , J. Wang , X. Zhang , J. Xia , M. Ezawa , O. A. Tretiakov , X. Xu , M. Mruczkiewicz , M. Krawczyk , Y. Xu , R. F. L. Richard , R. W. Chantrell , Y. Zhou

The magnetic properties of ferromagnetic thin films down to the nanoscale are ruled by the exchange stiffness, anisotropies and the effects of magnetic fields. As surfaces break inversion symmetry, an additional effective chiral exchange is…

Owing to the experimental discovery of magnetic skyrmions stabilized by the Dzyaloshinskii-Moriya and/or dipolar interactions in thin films, there is a recent upsurge of interest in magnetic skyrmions with antiferromagnetic spins in order…

材料科学 · 物理学 2020-08-04 K. Chen , D. Lott , A. Philippi-Kobs , M. Weigand , C. Luo , F. Radu

A stable skyrmion, representing the smallest realizable magnetic texture, could be an ideal element for ultra-dense magnetic memories. Here, we review recent progress in the field of skyrmionics, which is concerned with studies of tiny…

介观与纳米尺度物理 · 物理学 2018-10-01 Alexey A. Kovalev , Shane Sandhoefner

Skyrmions are localized magnetic spin textures whose stability has been shown theoretically to depend on material parameters including bulk Dresselhaus spin orbit coupling (SOC), interfacial Rashba SOC, and magnetic anisotropy. Here, we…

材料科学 · 物理学 2017-03-31 Adam S. Ahmed , Bryan D. Esser , James Rowland , David W. McComb , Roland K. Kawakami

B20 phase magnetic materials, such as FeGe, have been of significant interests in recent years because they enable magnetic skyrmions, which can potentially lead to low energy cost spintronic applications. One major effort in this emerging…

材料科学 · 物理学 2017-01-18 J. C. Gallagher , K. Y. Meng , J. T. Brangham , H. L. Wang , B. D. Esser , D. W. McComb , F. Y. Yang

Interaction of two skyrmions stabilized by the ferromagnetic exchange, Dzyaloshinskii-Moriya interaction (DMI), and external magnetic field has been studied numerically on a 2D lattice of size large compared to the separation, $d$, between…

介观与纳米尺度物理 · 物理学 2025-02-17 Daniel Capic , D. A. Garanin , E. M. Chudnovsky

Skyrmions are small magnetic quasiparticles, which are uniquely characterized by their topological charge and their helicity. In this Rapid Communication, we show via calculations how both properties can be determined without relying on…

强关联电子 · 物理学 2019-02-20 Börge Göbel , Alexander Mook , Jürgen Henk , Ingrid Mertig

We report experimental and theoretical evidence for the formation of chiral bobbers - an interfacial topological spin texture - in FeGe films grown by molecular beam epitaxy (MBE). After establishing the presence of skyrmions in…

Facing the ever-growing demand for data storage will most probably require a new paradigm. Magnetic skyrmions are anticipated to solve this issue as they are arguably the smallest spin textures in magnetic thin films in nature. We designed…

Skyrmions have become one of the most visited topics during the last decade in condensed matter physics. In this work, and by means of analytical calculations and micromagnetic simulations, we explore the effect of the magnetostatic field…

介观与纳米尺度物理 · 物理学 2020-01-29 N. Vidal-Silva , A. Riveros , F. Tejo , J. Escrig , D. Altbir

We demonstrate that chiral skyrmionic magnetization configurations can be found as the minimum energy state in B20 thin film materials with easy-plane magnetocrystalline anisotropy with an applied magnetic field perpendicular to the film…

Skyrmions are topologically protected field configurations with particle-like properties that play important roles in various fields of science. Recently, skyrmions have been directly observed in chiral magnets. Here, we investigate the…

强关联电子 · 物理学 2013-08-15 R. L. Silva , L. D. Secchin , W. A. Moura-Melo , A. R. Pereira , R. L. Stamps

Recently spin textures called skyrmions have been discovered in certain chiral magnetic materials without spatial inversion symmetry, and have attracted enormous attention due to their promising application in spintronics since only a low…

强关联电子 · 物理学 2013-06-18 Shi-Zeng Lin , Charles Reichhardt , Cristian D. Batista , Avadh Saxena

Thin-film sub-5 nm magnetic skyrmions constitute an ultimate scaling alternative for future digital data storage. Skyrmions are robust non-collinear spin-textures that can be moved and manipulated by small electrical currents. We show here…

介观与纳米尺度物理 · 物理学 2015-10-20 Dax M. Crum , Mohammed Bouhassoune , Juba Bouaziz , Benedikt Schweflinghaus , Stefan Blügel , Samir Lounis

Creating materials that do not exist in nature can lead to breakthroughs in science and technology. Magnetic skyrmions are topological excitations that have attracted great attention recently for their potential applications in low power,…

Magnetic skyrmions are localized particle-like nontrivial swirls that are promising in building high-performance topological spintronic devices. The read-out functions in skyrmionic devices require the translation of magnetic skyrmions to…

介观与纳米尺度物理 · 物理学 2022-12-13 Jin Tang , Jialiang Jiang , Ning Wang , Yaodong Wu , Yihao Wang , Junbo Li , Y. Soh , Yimin Xiong , Lingyao Kong , Shouguo Wang , Mingliang Tian , Haifeng Du