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Skyrmions, once a hypothesized field-theoretical object believed to describe the nature of elementary particles, became common sightings in recent years among several non-centrosymmetric metallic ferromagnets. For more practical…

Strongly Correlated Electrons · Physics 2015-06-04 Youngbin Tchoe , Jung Hoon Han

Current-induced motion of domain walls (CIMDW) with interfacial Dzyaloshinskii-Moriya interaction (DMI) in heavy metal (HM)/ferromagnetic (FM) metal multilayers have attracted attention owing to their potential application in novel magnetic…

Computational Physics · Physics 2019-11-12 Maokang Shen , Yue Zhang , Long You , Xiaofei Yang

Magnetic skyrmion, vortex-like swirling topologically stable spin configurations, is appealing as information carrier for future nanoelectronics, owing to the stability, small size and extremely low driving current density. One of the most…

Mesoscale and Nanoscale Physics · Physics 2017-02-21 Wang Kang , Yangqi Huang , Chentian Zheng , Weifeng Lv , Na Lei , Youguang Zhang , Xichao Zhang , Yan Zhou , Weisheng Zhao

Skyrmion bags as spin textures with arbitrary topological charge are expected to be the carriers in racetrack memory. Here, we theoretically and numerically investigated the dynamics of skyrmion bags in an anisotropy gradient. It is found…

Mesoscale and Nanoscale Physics · Physics 2022-08-10 Zhaozhuo Zeng , Nasir Mehmood , Yunxu Ma , Jianing Wang , Jianbo Wang , Qingfang Liu

Topological textures in magnetic and electric materials are considered to be promising candidates for next-generation information technology and unconventional computing. Here, we discuss how the physical properties of topological nanoscale…

Applied Physics · Physics 2023-11-21 Karin Everschor-Sitte , Atreya Majumdar , Katharina Wolk , Dennis Meier

The emergence of a topologically nontrivial vortex-like magnetic structure, the magnetic skyrmion, has launched new concepts for memory devices. There, extensive studies have theoretically demonstrated the ability to encode information bits…

Magnetic bimeron composed of two merons is a topological counterpart of magnetic skyrmion in in-plane magnets, which can be used as the nonvolatile information carrier in spintronic devices. Here we analytically and numerically study the…

Mesoscale and Nanoscale Physics · Physics 2020-09-25 Laichuan Shen , Xiaoguang Li , Jing Xia , Lei Qiu , Xichao Zhang , Oleg A. Tretiakov , Motohiko Ezawa , Yan Zhou

Optical generation of complex spin textures is one of the most exciting challenges of modern spintronics. Here, we uncover a distinct physical mechanism for imprinting spin chirality into collinear magnets with short laser pulses. By…

Mesoscale and Nanoscale Physics · Physics 2022-05-06 Sumit Ghosh , Frank Freimuth , Olena Gomonay , Stefan Blügel , Yuriy Mokrousov

The dynamics of the magnetic field in a superconducting phase is described by an effective massive bosonic field theory. If the superconductor is confined in a domain M with boundary \partial M, the boundary conditions of the…

Materials Science · Physics 2015-06-17 M. Asorey , A. P. Balachandran , J. M. Perez-Pardo

The surfaces of intrinsic magnetic topological insulators (TIs) host magnetic moments exchange-coupled to Dirac electrons. We study the magnetic phases arising from tuning the electron density using variational and exact diagonalization…

Mesoscale and Nanoscale Physics · Physics 2021-08-23 Nisarga Paul , Liang Fu

Self-organisation into spatially modulated structures has different nature from phase transition into uniform states. Skyrmions and half-skyrmions (merons) are representatives of such structures and are utilised in designing…

Materials Science · Physics 2022-04-18 Kyohei Takae , Takeshi Kawasaki

Writing, erasing and computing are three fundamental operations required by any working electronic devices. Magnetic skyrmions could be basic bits in promising in emerging topological spintronic devices. In particular, skyrmions in chiral…

Mesoscale and Nanoscale Physics · Physics 2022-04-06 Weiwei Wang , Dongsheng Song , Wensen Wei , Pengfei Nan , Shilei Zhang , Binghui Ge , Mingliang Tian , Jiadong Zang , Haifeng Du

Artificial magnetic fields break time-reversal symmetry in engineered materials--also known as metamaterials, enabling robust, topological transport of neutral excitations, much like electronic conduction edge channels in the integer…

Mesoscale and Nanoscale Physics · Physics 2025-02-03 Jesse J. Slim , Javier del Pino , Ewold Verhagen

Chirality induced by rolling a two-dimensional material into a spiral geometry reshapes its electronic band structure. In this work, we theoretically investigate the topological properties of carbon nanoscrolls under an axial magnetic…

Materials Science · Physics 2026-04-03 Tzu-Ching Hsu , Jhih-Shih You , Hsiu-Chuan Hsu , Ion Cosma Fulga

Increasing amounts of information force the continuous improvement of information storage and processing technologies, further device miniaturization, and their efficiency increase. Magnetic skyrmions, topological quasiparticles, and the…

Mesoscale and Nanoscale Physics · Physics 2022-04-13 Mateusz Zelent , Mathieu Moalic , Michal Mruczkiewicz , Xiaoguang Li , Yan Zhou , Maciej Krawczyk

Chirality, an inherent property of most objects of the universe, is a dynamic research topic in material science, physics, chemistry, and biology. The fundamental appeal of this extensive study is supported by the technological quest to…

Materials Science · Physics 2024-07-01 Igor Luk'yanchuk , Anna Razumnaya , Svitlana Kondovych , Yurii Tikhonov , Valerii M. Vinokur

Advanced vector imaging techniques provide us with 3D maps of magnetization fields in which topological concepts can be directly applied to describe real-space experimental textures in non-ideal geometries. Here, the 3D magnetization of a…

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…

We study magneto-transport through topological insulator nanowires shaped in the form of a constriction, as can be obtained by etching techniques. The magnetic field is coaxial, potentially turning the nanowire into a magneto-chiral…

Mesoscale and Nanoscale Physics · Physics 2025-01-30 Michael Barth , Maximilian Fürst , Raphael Kozlovsky , Klaus Richter , Cosimo Gorini

Superconductor/Ferromagnet (S/F) hybrid systems show interesting magneto-transport behaviors that result from the transfer of properties between both constituents. For instance, magnetic memory can be transferred from the F into the S…