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A magnetic skyrmion is a topological object that can exist as a solitary embedded in the vast ferromagnetic phase, or coexists with a group of its "siblings" in various stripy phases as well as skyrmion crystals (SkXs). Isolated skyrmions…

介观与纳米尺度物理 · 物理学 2021-03-25 H. T. Wu , X. C. Hu , K. Y. Jing , X. R. Wang

Magnetic skyrmions are topologically protected quasiparticles and have drawn much attention because of their potential applications in next-generation spintronics devices. Their inherent topological stability, nanoscale size, and efficient…

介观与纳米尺度物理 · 物理学 2025-02-19 Hind Prakash , Himanshu Fulara

This paper delves into the origins and specificity of the unique stable spin textures (360{\deg} closed loop domain walls and skyrmions) observed in exchange-biased systems, with either in-plane or out-of-plane magnetic anisotropy. In the…

介观与纳米尺度物理 · 物理学 2025-08-01 Bernard Dieny , Olivier Fruchart , Ernesto E. Marinero

We investigate theoretically magnetoentropic signatures of the crystal phase of magnetic skyrmions of various kinds, commonly appearing in two dimensions, \textit{viz.}, N\'eel, Bloch and anti skyrmions. Using Monte Carlo calculations based…

强关联电子 · 物理学 2024-12-03 Ahmed R. Saikia , Narayan Mohanta

We theoretically study the skyrmion-number dependence of spin-transfer torque acting on magnetic bubbles. The skymrion number of magnetic bubbles can take any integer value depending on the magnetic profile on its circumference and the size…

介观与纳米尺度物理 · 物理学 2018-12-31 Yuta Yamane , Jairo Sinova

The analytical model is developed for description of skyrmions and skyrmion-like magnetic structures in a two-sublattice antiferromagnet with uniaxial magnetic anisotropy and Dzyaloshinskii-Moriya interaction. Relativistic contraction of…

介观与纳米尺度物理 · 物理学 2019-12-09 O. Yu. Gorobets , Yu. I. Gorobets , V. S. Kovalenko

In this work, we develop a theory of (meta)stable states of N\'eel-type skyrmions in weak nonuniform magnetic fields. We claim an Ansatz for modeling the non-symmetric magnetization that can be implied for both analytics and numerical…

介观与纳米尺度物理 · 物理学 2024-03-06 S. S. Apostoloff , E. S. Andriyakhina , I. S. Burmistrov

We demonstrate a novel approach to control and stabilize magnetic skyrmions in ultrathin multilayer nanostructures through spatially engineered magnetostatic fields generated by ferromagnetic nanorings. Using analytical modeling and…

介观与纳米尺度物理 · 物理学 2025-05-09 Mateusz Zelent , Maciej Krawczyk , Konstantin Y. Guslienko

Magnetic skyrmions, topologically stable spin textures, have attracted significant interest due to their potential applications in information storage and processing. They are typically stabilized by the Dzyaloshinskii-Moriya interaction in…

其他凝聚态物理 · 物理学 2026-01-05 A. Vela Wac , F. A. Gómez Albarracín , D. C. Cabra

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 skyrmions are promising candidates for the next generation of spintronic devices due to their small size and topologically protected structure. One challenge for using these magnetic states in applications lies on controlling the…

介观与纳米尺度物理 · 物理学 2018-10-19 J. Brandão , D. A. Dugato , R. L. Seeger , J. C. Denardin , T. J. A. Mori , J. C. Cezar

We study the equilibrium and dynamical properties of skyrmions in thin films of chiral magnets with oblique magnetic field. The shape of an individual skyrmion is non-circular and the skyrmion density decreases with the tilt angle from the…

材料科学 · 物理学 2015-11-11 Shi-Zeng Lin , Avadh Saxena

We demonstrate numerically on large spin lattices that one can write skyrmions in a thin magnetic film with a magnetic dipole of a few tens of nanometer in size. Nucleation of non-chiral skyrmions as well as chiral skyrmions formed by the…

介观与纳米尺度物理 · 物理学 2018-10-17 Dmitry A. Garanin , Daniel Capic , Senfu Zhang , Xixiang Zhang , Eugene M. Chudnovsky

Recently, there has been substantial interest in realizations of skyrmions, in particular in 2D systems due to increased stability resulting from reduced dimensionality. A stable skyrmion, representing the smallest realizable magnetic…

介观与纳米尺度物理 · 物理学 2016-03-02 Utkan Güngördü , Rabindra Nepal , Oleg A. Tretiakov , Kirill Belashchenko , Alexey A. Kovalev

We develop a theoretical and numerical framework for three-dimensional bulk chiral magnets that includes the full magnetostatic dipole-dipole interaction and its back-reaction on the magnetization. Assuming translational invariance along…

介观与纳米尺度物理 · 物理学 2026-02-05 Paul Leask , Martin Speight

Magnetic skyrmions are nano-sized topologically non-trivial spin textures that can be moved by external stimuli such as spin currents and internal stimuli such as spatial gradients of a material parameter. Since the total energy of a…

介观与纳米尺度物理 · 物理学 2023-11-08 Ismael Ribeiro de Assis , Ingrid Mertig , Börge Göbel

Using Monte Carlo (MC) simulations, we study the skyrmion stability/instability as a response to uniaxial mechanical stresses. Skyrmions emerge in chiral magnetic materials as a stable spin configuration under external magnetic field…

We formulate and study the general boundary conditions dictating the magnetization profile in the vicinity of an interface between magnets with dissimilar properties. Boundary twists in the vicinity of an edge due to Dzyaloshinskii-Moriya…

介观与纳米尺度物理 · 物理学 2018-12-21 Aldo Raeliarijaona , Rabindra Nepal , Alexey A. Kovalev

Transition-metal interfaces and multilayers are a very promising class of systems to realize nanometer-sized, stable magnetic skyrmions for future spintronic devices. For room temperature applications it is crucial to understand the…

介观与纳米尺度物理 · 物理学 2020-10-28 Souvik Paul , Soumyajyoti Haldar , Stephan von Malottki , Stefan Heinze

The magnetic skyrmion structure can be formed in the chiral magnets (CMs) with strong Dzyaloshinskii-Moriya interactions. In this work, we propose a way of artificially tailoring the topological details of the skyrmion such as its radial…

介观与纳米尺度物理 · 物理学 2016-10-06 Yin-Yan Zhang , Rui Zhu