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Magnetism
Special Issues
Topological Spin Textures and Their Applications
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Topological Spin Textures and Their Applications

A special issue of Magnetism (ISSN 2673-8724).

Deadline for manuscript submissions: closed (30 September 2022) | Viewed by 7345

Special Issue Editors

Dr. Xichao Zhang

E-Mail Website
Guest Editor
Waseda Research Institute for Science and Engineering, Waseda University, Tokyo 169-8555, Japan
Interests: spintronics; micromagnetics; nanomagnetism; frustrated magnetism; frustrated spin systems; topological magnetism; topological spin textures; skyrmions; domain walls; vortices; magnetic memories; spintronic logic computing devices
Dr. Israa Medlej

E-Mail Website
Guest Editor
Shenzhen Institute for Quantum Science and Engineering, Southern University of Science and Technology, Shenzhen 518055, China
Interests: artificial intelligence devices; quantum physics; solid state physics; condensed matter physics; spintronics; magnonics; ferroelectric and multiferroic materials; spintronics and magnonics based neuromorphic computing; unconventional computing; thin film magnetism; magnetic properties; THz; magnetic insulators; antiferromagnetic material; ferrimagnet; skyrmions; anti-skyrmions; antiferromagnetic skyrmions; vortices; domain walls; superconductivity and superconductors; neutron scattering; neutron diffraction; superconducting quantum design; vibrating sample magnetometer; micromagnetic simulations
Special Issues, Collections and Topics in MDPI journals
Prof. Dr. Roberto Zivieri

E-Mail Website1 Website2
Guest Editor
1. Department of Mathematical and Computer Sciences, Physical Sciences and Earth Sciences, University of Messina, 1, 98122 Messina, Italy
2. Istituto Nazionale di Alta Matematica (INdAM), 00185 Rome, Italy
Interests: solid state physics and lattice phonons dynamics; spin waves; ferromagnetic materials and nanostructures; low-dimensional magnetic systems; quantum magnetic models; magnonic crystals; magnetic metamaterials; magnetic signature of ships; quantum magnetic sensors; topological defects; magnetic vortices and antivortices; magnetic skyrmions; spin-transfer torque effect; spin-Hall effect; band structure and mobility calculation of topological semimetals and magnetoresistance; linear and nonlinear seismic metamaterials; statistical thermodynamics of biological systems; entropy of irreversible reactions in living systems; electrical power signals; distribution lines; smart grids
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Topological spin textures constitute an extremely hot topic since their first experimental observation in 2009. Typical topological spin textures include skyrmions in two-dimensional nanostructures and hopfions in three-dimensional nanostructures. In principle, all topological spin textures stabilized in magnetic materials can be used to carry information and thus are potential building blocks for future magnetic and spintronic applications. For example, both theoretical and experimental works have suggested that skyrmions can be used as key components in racetrack-type memory, logic computing gates, and neuromorphic computing. Recent theoretical works have also pointed out the possibility that skyrmions can be used as qubits for quantum computing. However, there are still many open questions in the field of topological spin textures. This Special Issue, Topological Spin Textures and Their Applications, will focus on both the fundamental research of two-/three-dimensional topological spin textures and the developments of practical applications based on topological spin textures.

Dr. Xichao Zhang
Dr. Israa Medlej
Prof. Dr. Roberto Zivieri
Guest Editors

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Magnetism is an international peer-reviewed open access quarterly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 1000 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • spintronics
  • topological magnetism
  • chiral magnetism
  • topological spin textures
  • chiral spin textures
  • chiral domain walls
  • chiral bubbles
  • skyrmions
  • skyrmioniums
  • biskyrmions
  • merons
  • bimerons
  • bimeroniums
  • hopfions
  • Dzyaloshinskii–Moriya interactions
  • chiral interactions

Published Papers (3 papers)

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Editorial

Jump to: Research, Review

2 pages, 174 KiB  
Editorial
Topological Spin Textures and Their Applications
by Israa Medlej, Xichao Zhang and Roberto Zivieri
Magnetism 2021, 1(1), 58-59; https://0-doi-org.brum.beds.ac.uk/10.3390/magnetism1010005 - 02 Dec 2021
Cited by 2 | Viewed by 2197
Abstract
Topological spin textures have been an extremely hot topic since their first experimental observation in 2009 [...] Full article
(This article belongs to the Special Issue Topological Spin Textures and Their Applications)

Research

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12 pages, 2848 KiB  
Article
Magnetic Vortex Core String Gyrotropic Oscillations in Thick Cylindrical Dots
by Konstantin Guslienko
Magnetism 2022, 2(3), 239-250; https://0-doi-org.brum.beds.ac.uk/10.3390/magnetism2030018 - 19 Jul 2022
Cited by 3 | Viewed by 1959
Abstract
The nonuniform magnetic vortex gyrotropic oscillations along the cylindrical dot thickness were calculated. A generalized Thiele equation was used for describing the vortex core motion including magnetostatic and exchange forces. The magnetostatic interaction was accounted for in a local form. This allowed reducing [...] Read more.
The nonuniform magnetic vortex gyrotropic oscillations along the cylindrical dot thickness were calculated. A generalized Thiele equation was used for describing the vortex core motion including magnetostatic and exchange forces. The magnetostatic interaction was accounted for in a local form. This allowed reducing the Thiele equation of motion to the Schrödinger differential equation and analytically determining the spin eigenmode spatial profiles and eigenfrequencies using the Liouville–Green method for the high-frequency modes. The mapping of the Schrödinger equation to the Mathieu equation was used for the low-frequency gyrotropic mode. The lowest-frequency gyrotropic mode transformed to the dot faces localized mode, increasing the dot thickness. The vortex gyrotropic modes are described for a wide range of the dot thicknesses according to the concept of the turning points in the magnetostatic potential. This approach allows treating the vortex localized modes (turning points) and nonlocalized modes within a unified picture. Full article
(This article belongs to the Special Issue Topological Spin Textures and Their Applications)
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Review

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14 pages, 1741 KiB  
Review
Review of Orbital Magnetism in Graphene-Based Moiré Materials
by Priyamvada Jadaun and Bart Soreé
Magnetism 2023, 3(3), 245-258; https://0-doi-org.brum.beds.ac.uk/10.3390/magnetism3030019 - 28 Aug 2023
Viewed by 1748
Abstract
Recent years have seen the emergence of moiré materials as an attractive platform for observing a host of novel correlated and topological phenomena. Moiré heterostructures are generated when layers of van der Waals materials are stacked such that consecutive layers are slightly mismatched [...] Read more.
Recent years have seen the emergence of moiré materials as an attractive platform for observing a host of novel correlated and topological phenomena. Moiré heterostructures are generated when layers of van der Waals materials are stacked such that consecutive layers are slightly mismatched in their lattice orientation or unit cell size. This slight lattice mismatch gives rise to a long-wavelength moiré pattern that modulates the electronic structure and leads to novel physics. The moiré superlattice results in flat superlattice bands, electron–electron interactions and non-trivial topology that have led to the observation of superconductivity, the quantum anomalous Hall effect and orbital magnetization, among other interesting properties. This review focuses on the experimental observation and theoretical analysis of orbital magnetism in moiré materials. These systems are novel in their ability to host magnetism that is dominated by the orbital magnetic moment of Bloch electrons. This orbital magnetic moment is easily tunable using external electric fields and carrier concentration since it originates in the quantum anomalous Hall effect. As a result, the orbital magnetism found in moiré superlattices can be highly attractive for a wide array of applications including spintronics, ultra-low-power magnetic memories, spin-based neuromorphic computing and quantum information technology. Full article
(This article belongs to the Special Issue Topological Spin Textures and Their Applications)
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