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We study skyrmions in magnetic thin films with structural inversion asymmetry perpendicular to the film plane. We determine the magnetization texture of a single skyrmion and its dependence on the strength of the Dzyaloshinskii-Moriya…

Mesoscale and Nanoscale Physics · Physics 2014-03-05 M. E. Knoester , Jairo Sinova , R. A. Duine

Novel types of barrel-shaped chiral skyrmions can exist as isolated topological defects or as bound states in magnetic nanolayers with intrinsic and surface/interface induced chirality. The equilibrium parameters of chiral modulations…

Mesoscale and Nanoscale Physics · Physics 2014-04-29 A. O. Leonov

Topological magnetic textures, characterized by integer topological charge $S$, are potential candidates in future magnetic logic and memory devices, due to their smaller size and expected low threshold current density for their motion. An…

Magnetic skyrmions, topological spin textures observed in chiral magnets, have attracted huge interest due to their applications in the field of spintronics. In this work we study the stability of circular isolated skyrmions in…

Strongly Correlated Electrons · Physics 2019-03-06 S. A. Osorio , M. B. Sturla , H. D. Rosales , D. C. Cabra

We present a micromagnetic theory of compact magnetic skyrmions under applied magnetic field that accounts for the full dipolar energy and the interfacial Dzyaloshinskii-Moryia interaction (DMI) in the thin film regime. Asymptotic analysis…

Materials Science · Physics 2024-06-18 Anne Bernand-Mantel , Anaïs Fondet , Sarah Barnova , Theresa M. Simon , Cyrill B. Muratov

In the present work, using micromagnetic simulation, we show that the magnetic coupling effect plays a very important role in the process of creation of skyrmions in a coupled system of spin-torque nano-oscillators (STNO). First, we have…

Mesoscale and Nanoscale Physics · Physics 2018-12-13 H. Vigo-Cotrina , A. P. Guimarães

Two-dimensional van der Waals magnets hosting topological magnetic textures, such as skyrmions, show promise for applications in spintronics and quantum computing. Electrical control of these topological spin textures would enable novel…

This study investigates the stability of skyrmions and biskyrmions in perpendicular magnetic tunneling junctions with a thick CoFeB/Ta/CoFeB free layer. The samples showed a magnetoresistance of ~ 41% when annealed at 230 {\deg}C. Magnetic…

Materials Science · Physics 2026-03-13 W. Al Saidi , S. Amara , M. T. Zar Myint , S. Al Harthi , G. Setti , R. Sbiaa

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…

Three-dimensional (3D) topological spin textures emerge as promising quasi-particles for encoding information in future spintronic devices. The third dimension provides more malleability regarding their magnetic properties as well as more…

Mesoscale and Nanoscale Physics · Physics 2022-11-30 Matthieu Grelier , Florian Godel , Aymeric Vecchiola , Sophie Collin , Karim Bouzehouane , Albert Fert , Vincent Cros , Nicolas Reyren

Recent studies show superconductivity provides new perspectives on spintronics. We study a heterostructure composed of an s-wave superconductor and a cubic chiral-magnet that can stabilize a topological spin texture, a skyrmion. We propose…

Mesoscale and Nanoscale Physics · Physics 2016-12-21 Rina Takashima , Satoshi Fujimoto

Magnetic skyrmions are topologically non-trivial spin structure, and their existence in ferromagnetically coupled multilayers has been reported with disordered arrangement. In these multilayers, the heavy metal spacing layers provide an…

Strongly Correlated Electrons · Physics 2019-10-30 Yong Li , Qiyuan Feng , Sihua Li , Ke Huang , Weiliang Gan , Haibiao Zhou , Xiangjun Jin , Xiao Renshaw Wang , Fusheng Ma , Qingyou Lu , Wen Siang Lew

Chiral spin textures are fundamentally interesting, with promise for device applications. Stabilizing chirality is conventionally achieved by introducing Dzyaloshinskii-Moriya interaction (DMI) in asymmetric multilayers where the thickness…

Materials Science · Physics 2022-08-25 Gong Chen , Colin Ophus , Roberto Lo Conte , Roland Wiesendanger , Gen Yin , Andreas K. Schmid , Kai Liu

Axisymmetric magnetic lines of nanometer sizes (chiral vortices or skyrmions) have been predicted to exist in a large group of noncentrosymmetric crystals more than two decades ago. Recently these magnetic textures have been directly…

Mesoscale and Nanoscale Physics · Physics 2016-08-14 N. S. Kiselev , A. N. Bogdanov , R. Schäfer , U. K. Rößler

We report the creation and real-space observation of magnetic structures with well-defined topological properties and a lateral size as low as about 150 nm. They are generated in a thin ferrimagnetic film by ultrashort single optical laser…

Mesoscale and Nanoscale Physics · Physics 2013-05-06 M. Finazzi , M. Savoini , A. R. Khorsand , A. Tsukamoto , A. Itoh , L. Duò , A. Kirilyuk , Th. Rasing , M. Ezawa

Topological spin structures, such as magnetic skyrmions, hold great promises for data storage applications, thanks to their inherent stability. In most cases, skyrmions are stabilized by magnetic fields in non-centrosymmetric systems…

Materials Science · Physics 2020-12-02 Danila Amoroso , Paolo Barone , Silvia Picozzi

Magnetic skyrmions are topologically protected spin structures that naturally emerge in magnetic materials. While a vast amount of effort has gone into the study of their properties, their counterpart of opposite topological charge, the…

Strongly Correlated Electrons · Physics 2021-10-01 Juan C. Criado , Peter D. Hatton , Sebastian Schenk , Michael Spannowsky , Luke A. Turnbull

Electric control of magnetism is a prerequisite for efficient and low power spintronic devices. More specifically, in heavy metal/ ferromagnet/ insulator heterostructures, voltage gating has been shown to locally and dynamically tune…

Skyrmions are topological structures characterized by a winding vectorial configuration that provides a quantized topological charge. In magnetic materials, skyrmions are localized spin textures that exhibit unique stability and mobility…

Optics · Physics 2024-02-28 Xingyu Yang , Ye Mou , Bruno Gallas , Sébastien Bidault , Mathieu Mivelle

The unusual magnetic behaviour of helimagnet MnSi, noticed in recent years, prompted the suspicion that the magnetic states arising in such crystals are of topological nature. Recent experiments based on the topological Hall effect…

Other Condensed Matter · Physics 2009-06-18 Anjan Kundu