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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 magnetization reversal in 330 nm triangular prismatic magnetic nanoelements with variable magnetocrystalline anisotropy similar to that of partially chemically ordered FePt is studied using micromagnetic simulations employing Finite…

Computational Physics · Physics 2019-03-27 Leonidas N. Gergidis , Vasileios D. Stavrou , Drosos Kourounis , Ioannis Panagiotopoulos

Topological spin textures in frustrated intermetallics hold great promise for spintronics applications. However, understanding their origin and properties remains a significant challenge due to competing and often long-range interactions…

The identification of general principles for stabilizing magnetic skyrmion phases in bulk materials over wide ranges of temperatures is a prerequisite to the development of skyrmion-based spintronic devices. Lacunar spinels with the formula…

Materials Science · Physics 2020-02-12 Daniil A. Kitchaev , Emily C. Schueller , Anton Van der Ven

The chirality, i.e. left or right handedness, is an important notion in a broad range of science. In condensed matter, this occurs not only in molecular or crystal forms but also in magnetic structures. A magnetic skyrmion, a…

Materials Science · Physics 2013-10-24 K. Shibata , X. Z. Yu , T. Hara , D. Morikawa , N. Kanazawa , K. Kimoto , S. Ishiwata , Y. Matsui , Y. Tokura

We theoretically investigate the origin of the square-type skyrmion crystal in centrosymmetric itinerant magnets, motivated from the recent experimental finding in GdRu$_2$Si$_2$ [N. D. Khanh $\mathit{et}$ $\mathit{al.}$, Nat. Nanotech.…

Strongly Correlated Electrons · Physics 2021-01-27 Satoru Hayami , Yukitoshi Motome

The theory of magnetic symmetry in quasicrystals, described in a companion paper [cond-mat/0304669], is used to enumerate all 3-dimensional octagonal spin point groups and spin space-group types, and calculate the resulting selection rules…

Materials Science · Physics 2020-11-10 Shahar Even-Dar Mandel , Ron Lifshitz

Motivated by the observation of Skyrmion-like magnetic textures in 2D itinerant ferromagnets Fe$_n$GeTe$_2$ ($n \geq3$), we develop a microscopic model combining itinerant magnetism and spin-orbit coupling on a triangular lattice. The…

Strongly Correlated Electrons · Physics 2023-10-11 Deepti Rana , Soumyaranjan Dash , Monika Bhakar , Rajeshwari Roy Chowdhury , Ravi Prakash Singh , Sanjeev Kumar , Goutam Sheet

A detailed analytic and numerical analysis of the interaction between two bubble skyrmions has been carried out. Results from micromagnetic calculations show a strong dependence of the parameters of the skyrmion magnetic profile as a…

Mesoscale and Nanoscale Physics · Physics 2019-07-29 M. A. Castro , D. Mancilla-Almonacid , J. A. Valdivia , S. Allende

Topological spin textures have attracted much attention both for fundamental physics and spintronics applications. Among them, antiskyrmions possess a unique spin configuration with Bloch-type and N\'eel-type domain walls due to anisotropic…

Strongly Correlated Electrons · Physics 2021-02-26 Kosuke Karube , Licong Peng , Jan Masell , Xiuzhen Yu , Fumitaka Kagawa , Yoshinori Tokura , Yasujiro Taguchi

Magnetic skyrmions are topological magnetic structures, which exhibit quasi-particle properties and can show enhanced stability against perturbation from thermal noise. Recently, thermal Brownian diffusion of these quasi-particles has been…

NiMnSb is a ferromagnetic half-metal which, because of its rich anisotropy and very low Gilbert damping, is a promising candidate for applications in information technologies. We have investigated the in-plane anisotropy properties of thin,…

Mesoscale and Nanoscale Physics · Physics 2014-03-12 Felicitas Gerhard , Claus Schumacher , Charles Gould , Laurens W. Molenkamp

The magnetic properties of ferromagnetic thin films down to the nanoscale are ruled by the exchange stiffness, anisotropies and the effects of magnetic fields. As surfaces break inversion symmetry, an additional effective chiral exchange is…

We report muon spin relaxation and magnetometry studies of bulk Mn$_{1.4}$Pt$_{0.9}$Pd$_{0.1}$Sn and MnNiGa, two materials which have recently been proposed to host topological magnetic states in thin lamella (antiskyrmions for…

Transport of intensity equation (TIE) has been applied to process the simulated and experimental images of the magnetic hard nanobubbles, which were acquired in the Lorentz transmission electron microscope (LTEM). Systematic studies…

Materials Science · Physics 2019-05-07 Yuan Yao , Bei Ding , Jie Cui , Xi Shen , Yanguo Wang , Wenhong Wang , Richeng Yu

Skyrmions are chiral magnetic textures that have immense potential for applications in spintronic devices. However, their formation is quite challenging and necessitates a subtle balance of the magnetic interactions at play. Here, we study…

Research on magnetic systems with broken inversion symmetry has been stimulated by the experimental proof of particle-like configurations known as skyrmions, whose non-trivial topological properties make them ideal candidates for spintronic…

Magnetic skyrmions are vortex-like topological spin textures often observed in structurally chiral magnets with Dzyaloshinskii-Moriya interaction. Among them, Co-Zn-Mn alloys with a $\beta$-Mn-type chiral structure host skyrmions above room…

Strongly Correlated Electrons · Physics 2020-08-13 K. Karube , J. S. White , V. Ukleev , C. D. Dewhurst , R. Cubitt , A. Kikkawa , Y. Tokunaga , H. M. Rønnow , Y. Tokura , Y. Taguchi

We study the equilibrium and dynamical properties of skyrmions in thin films of chiral magnets with oblique magnetic field. The shape of an individual skyrmion is non-circular and the skyrmion density decreases with the tilt angle from the…

Materials Science · Physics 2015-11-11 Shi-Zeng Lin , Avadh Saxena

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
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