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The breathing mode of a skyrmion, corresponding to coupled oscillations of its size and chirality angle is studied numerically for a conservative classical-spin system on a $500\times500$ lattice. The dependence of the oscillation frequency…

Mesoscale and Nanoscale Physics · Physics 2020-01-22 Dmitry A. Garanin , Reem Jaafar , Eugene M. Chudnovsky

In chiral magnets, localized topological magnetic whirls, magnetic skyrmions, can be moved by spin polarized electric currents. Upon increasing the current strength, with prospects for high-speed skyrmion motion for spintronics applications…

Mesoscale and Nanoscale Physics · Physics 2020-06-22 Jan Masell , Davi R. Rodrigues , Ben F. McKeever , Karin Everschor-Sitte

When electrons are driven through unconventional magnetic structures, such as skyrmions, they experience emergent electromagnetic fields that originate several Hall effects. Independently, ground state emergent magnetic fields can also lead…

Mesoscale and Nanoscale Physics · Physics 2016-12-23 Manuel dos Santos Dias , Juba Bouaziz , Mohammed Bouhassoune , Stefan Blügel , Samir Lounis

Magnetic skyrmions are promising candidates as information carriers in spintronic devices. The transport of individual skyrmions in a fast and controlled way is a key issue in this field. Here we introduce a novel platform for accelerating,…

Mesoscale and Nanoscale Physics · Physics 2020-12-25 Josep Castell-Queralt , Leonardo G. González-Gómez , Nuria Del-Valle , Alvaro Sanchez , Carles Navau

Controlling magnetism with electric fields is a key challenge to develop future energy-efficient devices, however, the switching between inversion symmetric states, e.g. magnetization up and down as used in current technology, is not…

Mesoscale and Nanoscale Physics · Physics 2016-11-15 Pin-Jui Hsu , André Kubetzka , Aurore Finco , Niklas Romming , Kirsten von Bergmann , Roland Wiesendanger

In three-dimensional chiral magnets, skyrmions are line-like objects oriented parallel to the applied magnetic field. The efficient coupling of magnetic skyrmion lattices to spin currents and magnetic fields permits their dynamical…

Strongly Correlated Electrons · Physics 2025-04-03 Felix Rucker , Alla Bezvershenko , Denis Mettus , Andreas Bauer , Markus Garst , Achim Rosch , Christian Pfleiderer

Since the experimental discovery of magnetic skyrmions achieved one decade ago, there have been significant efforts to bring the virtual particles into all-electrical fully functional devices, inspired by their fascinating physical and…

Spin torque nano-oscillator has been extensively studied both theoretically and experimentally in recent decades due to its potential applications in future microwave communication technology and neuromorphic computing. In this work, we…

Mesoscale and Nanoscale Physics · Physics 2023-01-12 Xue Liang , Laichuan Shen , Xiangjun Xing , Yan Zhou

We theoretically study the interaction of an isolated bimeron skyrmion in quasi-two-dimensional easy-plane magnets with a surrounding spin superfluid associated with spontaneously broken U(1) spin-rotational symmetry, revealing that…

Mesoscale and Nanoscale Physics · Physics 2019-06-06 Se Kwon Kim

Magnetic skyrmions are topologically protected spin textures, stabilised in systems with strong Dzyaloshinskii-Moriya interaction (DMI). Several studies have shown that electrical currents can move skyrmions efficiently through spin-orbit…

To commercialize stable, highly-integrated, and low-power-consuming magnetic memories of skyrmions, stable control of their motion is crucial. Manipulating the inter-skyrmion interactions is key to achieving this goal. We find that…

Mesoscale and Nanoscale Physics · Physics 2023-11-30 Mai Kameda , Koji Kobayashi , Yuki Kawaguchi

We report on the thermal effects on the motion of current-driven massive magnetic skyrmions. The reduced equation for the motion of skyrmion has the form of a stochastic generalized Thiele's equation. We propose an ansatz for the…

Mesoscale and Nanoscale Physics · Physics 2014-11-11 Roberto E. Troncoso , Alvaro S. Núñez

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…

Mesoscale and Nanoscale Physics · Physics 2018-10-01 Alexey A. Kovalev , Shane Sandhoefner

Magnetic skyrmions have garnered attention for their potential roles in spintronic applications, such as information carriers in computation, data storage, and nano-oscillators due to their small size, topological stability, and the…

Mesoscale and Nanoscale Physics · Physics 2024-05-20 Rajgowrav Cheenikundil , Zhiwei Lu , Manuel Pereiro , Anna Delin , Danny Thonig

Recent developments in the magnetization dynamics in spin textures, particularly skyrmions, offer promising new directions for magnetic storage technologies and spintronics. Skyrmions, characterized by their topological protection and…

Materials Science · Physics 2024-08-21 Satadeep Bhattacharjee , Seung-Cheol Lee

Due to their topological protection and nanometric size, magnetic skyrmions are anticipated to form components of new high-density memory technologies. In metallic systems skyrmion manipulation is achieved easily under a low density…

Strongly Correlated Electrons · Physics 2018-07-25 J. S. White , I. Živković , A. J. Kruchkov , M. Bartkowiak , A. Magrez , H. M. Rønnow

A magnetic skyrmionium (also called 2$\pi$-skyrmion) can be understood as a skyrmion - a topologically non-trivial magnetic whirl - which is situated in the center of a second skyrmion with reversed magnetization. Here, we propose a new…

Strongly Correlated Electrons · Physics 2019-08-22 Börge Göbel , Alexander F. Schäffer , Jamal Berakdar , Ingrid Mertig , Stuart S. P. Parkin

We study the dynamical control of a magnetic skyrmion bubble by using counter-propagating surface acoustic waves (SAWs) in a ferromagnet. First, we determine the bubble mass and derive the force due to SAWs acting on a magnetic bubble using…

Mesoscale and Nanoscale Physics · Physics 2018-03-19 Rabindra Nepal , Utkan Güngördü , Alexey A. Kovalev

Magnetic skyrmions are topological solitons that exhibit an increased stability against annihilation, and can be displaced with low current densities, making them a promising candidate as an information carrier. In order to demonstrate a…

Magnetic skyrmions are promising for building next-generation magnetic memories and spintronic devices due to their stability, small size and the extremely low currents needed to move them. In particular, skyrmion-based racetrack memory is…

Materials Science · Physics 2015-01-14 Xichao Zhang , G. P. Zhao , Hans Fangohr , J. Ping Liu , W. X. Xia , J. Xia , F. J. Morvan
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