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Materials with antiferromagnetic order have recently emerged as promising candidates in spintronics based on their beneficial characteristics such as vanishing stray fields and ultra-fast dynamics. At the same time more complex localized…

Curved magnetic architectures are key enablers of the prospective magnetic devices with respect to size, functionality and speed. By exploring geometry-governed magnetic interactions, curvilinear magnetism offers a number of intriguing…

Strongly Correlated Electrons · Physics 2023-04-05 Kostiantyn V. Yershov , Denis D. Sheka

In ferromagnetic multilayers, a single laser pulse with a fluence above an optical nucleation threshold can create magnetic skyrmions, which are randomly distributed over the area of the laser spot. However, in order to study the dynamics…

Skyrmions, topologically stable magnetic solitons characterized by whirling magnetization in nanoscale magnetic elements, show promise information carriers in spintronics and spin-based quantum computing due to their unique properties:…

Mesoscale and Nanoscale Physics · Physics 2024-11-08 Suyeong Jeong , Dae-Han Jung , Hee-Sung Han , Ganghwi Kim , Myeonghwan Kang , Mi-Young Im , Younggun Park , Ki-Suk Lee

We study the geometrical conditions for stabilizing magnetic skyrmions in cylindrical nanostrips and nanotubes of ferromagnetic materials with chiral interactions. We obtain the low-temperature equilibrium state of the system implementing a…

Mesoscale and Nanoscale Physics · Physics 2020-08-28 Dimitris Kechrakos , Lida Tzannetou , Aristotelis Patsopoulos

The inhomogeneous magnetic stray field of micromagnets has been extensively used to manipulate electron spin qubits. By means of micromagnetic simulations and scanning superconducting quantum interference device microscopy, we show that the…

Mesoscale and Nanoscale Physics · Physics 2024-10-14 Michele Aldeghi , Rolf Allenspach , Andriani Vervelaki , Daniel Jetter , Kousik Bagani , Floris Braakman , Martino Poggio , Gian Salis

Non-collinear spin order that breaks space inversion symmetry and allows efficient electric-field control of magnetism makes BiFeO$_3$ a promising candidate for applications in low-power spintronic devices. Epitaxial strain effects have…

Two-dimensional magnetic garnets exhibit complex and fascinating magnetic domain structures, like stripes, labyrinths, cells and mixed states of stripes and cells. These patterns do change in a reversible way when the intensity of an…

Statistical Mechanics · Physics 2009-11-07 J. R. Iglesias , S. Goncalves , O. Nagel , M. Kiwi

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…

We explore magnetic-field-driven chaos in magnetic skyrmions. Oscillating magnetic fields induce nonlinear dynamics in skyrmions, arising from the coupling of the secondary gyrotropic mode with a non-uniform, breathing-like mode. Through…

Materials Science · Physics 2023-09-11 Gyuyoung Park , Sang-Koog Kim

Magnetic skyrmions emerge as promising quasi-particles for encoding information in nextgeneration spintronic devices. Their innate flexibility in shape is essential for the applications although they were often ideally treated as rigid…

Materials Science · Physics 2024-12-09 Zhen-Yu Tan , Ji-Pei Chen , Yu-Ke Shi , Yuan Chen , Ming-Hui Qin , Xing-Sen Gao , Jun-Ming Liu

We have observed the evolution of phase diagram and vortex pinning using a single ferromagnet/superconductor bilayer of [Co/Pt]8/Nb through a special demagnetization procedure. It induces a continuous and reversible change of the domain…

Superconductivity · Physics 2010-08-06 L. Y. Zhu , Marta Z. Cieplak , C. L. Chien

We study spin-wave excitations in a circular ferromagnetic nanodot in different inhomogeneous, topologically non-trivial magnetization states, specifically, vortex and skyrmion states. Gradual change in the strength of the out-of-plane…

Mesoscale and Nanoscale Physics · Physics 2017-03-22 Michal Mruczkiewicz , Maciej Krawczyk , Konstantin Y. Guslienko

The permeability is calculated for a thin ferromagnetic film with the stripe domain structure and out-of-plane uniaxial magnetic anisotropy. Analytical expressions for the frequency dependence of components of permeability tensor are…

Materials Science · Physics 2007-05-23 N. A. Buznikov , K. N. Rozanov

A magnetic skyrmion is a spin whirl with topological protection and high mobility to electric current. Intrinsic magnetoelastic coupling in chiral magnets permits manipulation of magnetic skyrmions and their lattice using mechanical loads,…

Mesoscale and Nanoscale Physics · Physics 2017-12-12 Yangfan Hu , Biao Wang

Magnetic skyrmions are topologically wound nanoscale textures of spins whose ambient stability and electrical manipulation in multilayer films have led to an explosion of research activities. While past efforts focused predominantly on…

Several recent experimental studies have confirmed the possibility of switching the magnetization direction in the small magnetic domains by pumping large spin-polarized currents through them. On the basis of equations proposed by…

Condensed Matter · Physics 2009-10-31 Ya. B. Bazaliy , B. A. Jones , Shou-Cheng Zhang

Understanding the physical properties of magnetic skyrmions is important for fundamental research with the aim to develop new spintronic device paradigms where both logic and memory can be integrated at the same level. Here, we show a…

Mesoscale and Nanoscale Physics · Physics 2018-02-14 R. Tomasello , K. Y. Guslienko , M. Ricci , A. Giordano , J. Barker , M. Carpentieri , O. Chubykalo-Fesenko , G. Finocchio

Switching in magnetic materials gives rise to rich physical phenomena and lies at the heart of their technological applications. Although domain wall motion in ferro- and antiferromagnets has been studied, in spiral magnets it is still…

Strongly Correlated Electrons · Physics 2024-02-19 Francesco Foggetti , Margherita Parodi , Naoto Nagaosa , Sergey Artyukhin

Magnetic skyrmions are emerging as promising candidates for next-generation information technologies, while the realization of scalable skyrmion lattices with tailored configurations is essential for advancing fundamental skyrmion physics…