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Facing the ever-growing demand for data storage will most probably require a new paradigm. Magnetic skyrmions are anticipated to solve this issue as they are arguably the smallest spin textures in magnetic thin films in nature. We designed…

The profile and energy of chiral skyrmions, found in magnetic materials with the Dzyaloshinskii-Moriya interaction, can be approximated by formulae obtained through asymptotic analysis in the limits of small and large skyrmion radius. Using…

Mesoscale and Nanoscale Physics · Physics 2023-02-22 Stavros Komineas , Christof Melcher , Stephanos Venakides

Single magnetic skyrmion dynamics in chiral magnets with a spatially inhomogeneous Dzyaloshinskii-Moriya interaction (DMI) is considered. Based on the relation between DMI coupling and skyrmion helicity, it is argued that the latter must be…

Mesoscale and Nanoscale Physics · Physics 2016-09-13 Sebastián A. Díaz , Roberto E. Troncoso

Dzyaloshinskii-Moriya interaction is at heart of chiral magnetism and causes emergence of rich non-collinear and unique topological spin textures in magnetic materials, including cycloids, helices, skyrmions and other. Here we show that…

Mesoscale and Nanoscale Physics · Physics 2020-09-09 Denis Sabani , Cihan Bacaksiz , Milorad V. Milosevic

We investigate the magnetization and the Dzyaloshinskii-Moriya interactions (DMI) in Pt/Co/Re thin films in the case of perfect interfaces and upon the introduction of intermixing on both Co interfaces. Calculations were implemented on a…

Materials Science · Physics 2024-01-24 Amar Fakhredine , Andrzej Wawro , Carmine Autieri

Mn4N thin film is one of the potential magnetic mediums for spintronic devices due to its ferrimagnetism with low magnetization, large perpendicular magnetic anisotropy (PMA), thermal stability, and large domain wall velocity. A recent…

Materials Science · Physics 2023-05-17 Wei Zhou , Chung Ting Ma , S. Joseph Poon

Realizing sizeable Dzyaloshinskii-Moriya interaction (DMI) in intrinsic two-dimensional (2D) magnets without any manipulation will greatly enrich potential application of spintronics devices. The simplest and most desirable situation should…

Materials Science · Physics 2022-09-26 Yonglong Ga , Qirui Cui , Jinghua Liang , Dongxing Yu , Yingmei Zhu , Liming Wang , Hongxin Yang

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…

Strongly Correlated Electrons · Physics 2022-05-03 Sahbi El Hog , Fumitake Kato , Satoshi Hongo , Hiroshi Koibuchi , Gildas Diguet , Tetsuya Uchimoto , Hung T. Diep

Using a general framework, interaction potentials between chiral magnetic solitons in a planar system with a tilted external magnetic field are calculated analytically in the limit of large separation. The results are compared to previous…

Mesoscale and Nanoscale Physics · Physics 2023-07-19 Bruno Barton-Singer , Bernd J. Schroers

Curvilinear nanomagnets can support magnetic skyrmions stabilized at a local curvature without any intrinsic chiral interactions. Here, we propose a new mechanism to stabilize chiral N\'{e}el skyrmion states relying on the \textit{gradient}…

Mesoscale and Nanoscale Physics · Physics 2019-01-02 Oleksandr V. Pylypovskyi , Denys Makarov , Volodymyr P. Kravchuk , Yuri Gaididei , Avadh Saxena , Denis D. Sheka

The enhancement of interfacial Dzyaloshinskii-Moriya Interaction (DMI) in magnetic multilayers results in the stabilization of topological spin textures like chiral domain walls and skyrmions. Here we report on the evaluation of…

Interfacial Dzyaloshinskii-Moriya interaction (iDMI) has been investigated in Co2FeAl (CFA) ultrathin films of various thicknesses (0.8 nm<tCFA<2 nm) grown on Si substrates, using Pt, W, Ir and MgO buffer or/and capping layers. Vibrating…

The antisymmetric Dzyaloshinskii-Moriya interaction (DMI) in noncentrosymmetric systems leads to various nonuniform chiral magnetic textures. Polarized neutron scattering is a powerful method for investigation such chiral distributions. The…

Materials Science · Physics 2020-05-06 D. A. Tatarskiy

Ultrathin metallic ferromagnets on substrates with strong spin-orbit coupling can exhibit induced chiral interactions of the Dzyaloshinskii-Moriya (DM) form. For systems with perpendicular anisotropy, the presence of DM interactions has…

Materials Science · Physics 2014-06-17 Felipe Garcia-Sanchez , Pablo Borys , Arne Vansteenkiste , Joo-Von Kim , Robert L. Stamps

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…

The magnetic exchange interaction is the one of the key factors governing the basic characteristics of magnetic systems. Unlike the symmetric nature of the Heisenberg exchange interaction, the interfacial Dzyaloshinskii-Moriya interaction…

Chiral magnetic textures in ultrathin perpendicularly magnetised multilayer film stacks with an interfacial Dzyaloshinskii-Moriya interaction have been the focus of much research recently. The chirality associated with the broken inversion…

Materials Science · Physics 2020-01-01 K. Fallon , S. McVitie , W. Legrand , F. Ajejas , D. Maccariello , S. Collin , V. Cros , N. Reyren

Friction plays an essential role in most physical processes that we experience in our everyday life. Examples range from our ability to walk or swim, to setting boundaries of speed and fuel efficiency of moving vehicles. In magnetic…

We find closed-form solution of the Euler equation for a chiral magnet in terms of a skyrmion or a meron depending on the relative strengths of magnetic anisotropy and magnetic field. We show that the relevant length scales for these…

Mesoscale and Nanoscale Physics · Physics 2019-11-27 Sandip Bera , Sudhansu S. Mandal

The presence of interfacial Dzyaloshinskii-Moriya interaction (DMI) may lead to the appearance of N\'eel skyrmions in ferromagnetic films. These topologically protected structures, whose diameter is as small as a few nanometers, can be…

Mesoscale and Nanoscale Physics · Physics 2022-03-23 Mattia Bassotti , Raffaele Silvani , Giovanni Carlotti