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Skyrmions are vortex-like localized magnetic structures that possess an integer-valued topological index known as the skyrmion number or topological charge. Skyrmion number determines the topology-related emergent magnetism, which is highly…

Topological spin textures are characterized by topological magnetic charges, Q, which govern their electromagnetic properties. Recent studies have achieved skyrmion bundles with arbitrary integer values of Q, opening possibilities for…

Mesoscale and Nanoscale Physics · Physics 2025-12-12 Yongsen Zhang , Jin Tang , Yaodong Wu , Meng Shi , Xitong Xu , Shouguo Wang , Mingliang Tian , Haifeng Du

The successful realization of skyrmion-based spintronic devices depends on the easy manipulation of underlying magnetic interactions in the skyrmion-hosting materials. Although the mechanism of skyrmion formation in non-centrosymmetric…

Materials Science · Physics 2022-07-28 Dola Chakrabartty , Sk Jamaluddin , Subhendu K. Manna , Ajaya K. Nayak

The dynamic control of skyrmion properties such as polarity, vorticity, and topological charge is crucial for their implementation in spintronic applications. In this work, we investigate the periodic inversion of the topological charge in…

Mesoscale and Nanoscale Physics · Physics 2025-08-15 R. L. Silva , R. C. Silva

Magnetic skyrmions are topologically non-trivial spin textures of potential interest for future information storage applications, and for such purposes, the control and understanding of single skyrmion creation is required. A scheme is…

Mesoscale and Nanoscale Physics · Physics 2016-05-11 Gen Yin , Yufan Li , Lingyao Kong , Roger K. Lake , C. L. Chien , Jiadong Zang

Quantization of topological charges determines the various topological spin textures that are expected to play a key role in future spintronic devices. While the magnetic skyrmion with a unit topological charge Q has been extensively…

Materials Science · Physics 2021-08-29 Jin Tang , Yaodong Wu , Weiwei Wang , Lingyao Kong , Boyao Lv , Wensen Wei , Jiadong Zang , Mingliang Tian , Haifeng Du

Magnetic skyrmions are intriguing topological spin textures that promise future high-density spintronic devices. The creation of magnetic skyrmions has been understood based on the energetics of skyrmions, but the detailed dynamic process…

Mesoscale and Nanoscale Physics · Physics 2020-11-17 Soong-Geun Je

Strongly correlated Kagome magnets are promising candidates for achieving controllable topological devices owing to the rich interplay between inherent Dirac fermions and correlation-driven magnetism. Here we report tunable local magnetism…

Skyrmions are spatially localized magnetic swirls which carry a nonzero integer topological charge. We study crystals of skyrmions in a two-dimensional ferromagnet model with chiral interactions induced by the presence of broken inversion…

Strongly Correlated Electrons · Physics 2021-07-22 Sopheak Sorn , Stefan Divic , Arun Paramekanti

Topological magnetic solitons have emerged as promising candidates for information carriers in spintronic devices, thanks to their fascinating electromagnetic properties. For fundamental device applications, the ability to electrically…

Mesoscale and Nanoscale Physics · Physics 2025-12-11 Yaodong Wu , Jialiang Jiang , Lingyao Kong , Wei Liu , Huanhuan Zhang , Shouguo Wang , Mingliang Tian , Haifeng Du , Jin Tang

Magnetic skyrmions and antiskyrmions are characterised by an integer topological charge $\mathcal Q =\mp 1$, describing the winding of the magnetic orientation. Half-integer winding numbers, $\mathcal Q=\pm \frac{1}{2}$, can be obtained for…

Mesoscale and Nanoscale Physics · Physics 2024-09-24 Nina del Ser , Imane El Achchi , Achim Rosch

The skyrmion is a topologically stable spin texture, in which the spin direction wraps a sphere. The topological nature gives rise to emergent electromagnetic phenomena such as topological Hall effect. Recently, the crystallization of…

Materials Science · Physics 2015-06-04 Y. Onose , Y. Okamura , S. Seki , S. Ishiwata , Y. Tokura

Interplay between itinerant electrons and localized spins in itinerant magnets gives rise to a variety of noncoplanar multiple-$Q$ spin textures, such as the skyrmion, hedgehog, meron, and vortex. We elucidate that another type of…

Strongly Correlated Electrons · Physics 2021-12-15 Satoru Hayami

Magnetic skyrmions are nanoscale spin whirlpools that promise breakthroughs in future spintronic applications. Controlled generation of magnetic skyrmions by electric current is crucial for this purpose. While previous studies have…

Materials Science · Physics 2022-11-29 Xuebing Zhao , Jin Tang , Ke Pei , Weiwei Wang , Shi-Zeng Lin , Haifeng Du , Mingliang Tian , Renchao Che

Magnetic skyrmions are compact chiral spin textures that exhibit a rich variety of topological phenomena and hold potential for developing high-density memory devices and novel computing schemes driven by spin currents. Here, we demonstrate…

The magnetic skyrmion with the topological number of unity ($Q=1$) is a well-known nanometric swirling spin structure in the nonlinear $\sigma$ model with the Dzyaloshinskii-Moriya interaction. Here, we show that magnetic skyrmion with the…

Mesoscale and Nanoscale Physics · Physics 2016-01-22 Xichao Zhang , Yan Zhou , Motohiko Ezawa

Magnetic skyrmions are spin swirls that possess topological nontriviality and are considered particle-like entities. They are distinguished by an integer topological charge Q. The presence of skyrmion bundles provides an opportunity to…

Materials Science · Physics 2023-11-30 Jin Tang , Yaodong Wu , Jialiang Jiang , Lingyao Kong , Shouguo Wang , Mingliang Tian , Haifeng Du

Magnetic skyrmions are textures behaving as quasiparticles which are topologically different from other states. Their discovery in systems with broken inversion symmetry sparked the search for materials containing such magnetic phase at…

We study the current-driven motion of metastable localized spin structures with various topological charges in a (Pt$_{1-x}$Ir$_{x}$)/Fe bilayer on a Pd(111) surface by combining atomistic spin model simulations with an approach based on…

Mesoscale and Nanoscale Physics · Physics 2019-07-03 Markus Weißenhofer , Ulrich Nowak

The all-optical control of magnetization at room temperature broadens the scope of applications of spin degrees-of-freedom in data storage, spintronics, and quantum computing. Topological magnetic spin structures, such as skyrmions, are of…

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