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Interaction between local magnetization and conduction electrons is responsible for a variety of phenomena in magnetic materials. It has been recently shown that spin current and associated electric voltage can be induced by magnetization…

Mesoscale and Nanoscale Physics · Physics 2018-12-31 Yuta Yamane , Shayan Hemmatiyan , Jun'ichi Ieda , Sadamichi Maekawa , Jairo Sinova

We theoretically show that a temporally oscillating spin-driven electromotive force or voltage with a large DC component can be generated by exciting microwave-active spin-wave modes of a skyrmion crystal confined in a quasi two-dimensional…

Mesoscale and Nanoscale Physics · Physics 2021-08-31 Tatsuya Koide , Akihito Takeuchi , Masahito Mochizuki

We theoretically demonstrate that the presence of Dzyaloshinskii-Moriya Interaction (DMI) can lead to enhancement of the spin-motive force (SMF) arising due to field-induced ferromagnetic domain wall motion. A SMF refers to an electric…

Mesoscale and Nanoscale Physics · Physics 2018-12-05 Yuta Yamane

Magnetic skyrmions are topological spin textures that appear in magnets with broken spatial inversion symmetry via competition between the (anti)ferromagnetic exchange interactions and the Dzyaloshinskii-Moriya interactions in a magnetic…

Mesoscale and Nanoscale Physics · Physics 2025-02-14 Yuto Ohki , Masahito Mochizuki

A new spinmotive force is predicted in ferromagnets with spin-orbit coupling. By extending the theory of spinmotive force, we show that a time-varying electric field can induce a spinmotive force with static and uniform magnetization. This…

Mesoscale and Nanoscale Physics · Physics 2015-06-15 Yuta Yamane , Jun'ichi Ieda , Sadamichi Maekawa

We study, both analytically and numerically, a spinmotive force arising from inherent magnetic energy of a domain wall in a wedged ferromagnetic nanowire. In a spatially-nonuniform nanowire, domain walls are subjected to an effective…

Other Condensed Matter · Physics 2015-05-28 Yuta Yamane , Jun'ichi Ieda , Jun-ichiro Ohe , Stewart E. Barnes , Sadamichi Maekawa

We theoretically propose that an electric voltage can be generated by thermal gradient with a rotating skyrmion crystal confined in a magnetic disk. We find that the rotation of skyrmion crystal induced by diffusive thermal magnon currents…

Mesoscale and Nanoscale Physics · Physics 2023-04-20 Junnosuke Matsuki , Masahito Mochizuki

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

In this work, the current-induced inertial effects on skyrmions hosted in ferromagnetic systems are studied. {When the dynamics is considered beyond the particle-like description, magnetic skyrmions can deform due to a self-induced field.…

Magnetic skyrmionium is a skyrmion-like spin texture with nanoscale size and high mobility. It is a topologically trivial but dynamically stable structure, which can be used as a non-volatile information carrier for next-generation…

Mesoscale and Nanoscale Physics · Physics 2021-11-25 Xue Liang , Xichao Zhang , Laichuan Shen , Jing Xia , Motohiko Ezawa , Xiaoxi Liu , Yan Zhou

The spin-motive force (SMF) in a simple ferromagnetic monolayer caused by a surface acoustic wave is studied theoretically via spin-vorticity coupling (SVC). The SMF has two mechanisms. The first is the SVC-driven SMF, which produces the…

Mesoscale and Nanoscale Physics · Physics 2022-02-22 Takumi Funato , Mamoru Matsuo

Magnetic skyrmions, as a whirling spin texture with axisymmetry, cannot be propelled by a uniform magnetic field. Therefore, reported skyrmion motions have been induced using other sorts of stimuli; typically, electric currents in magnetic…

Mesoscale and Nanoscale Physics · Physics 2022-10-18 Xiangjun Xing , Yan Zhou

Magnetic skyrmions are topological spin textures promising for future high-density and nonvolatile memory. It is crucial to understand the current-driven skyrmion dynamics in the presence of deformation, of which an analytical model,…

Mesoscale and Nanoscale Physics · Physics 2022-01-13 Zehan Chen , Xichao Zhang , Yan Zhou , Qiming Shao

Non-uniform magnetic structures produce emergent electromagnetic phenomena such as the topological Hall effect and the spin-motive force (SMF). The experimental reports on the SMF, however, are very few and the relationship between the SMF…

Materials Science · Physics 2020-03-13 Shun Fukuda , Hiroyuki Awano , Kenji Tanabe

The dynamics of magnetic skyrmion driven by spin-polarized current is theoretically studied in the chiral ferromagnetic film with spatially modulated Dzyaloshinskii-Moriya interaction. Three cases including linear, sinusoidal, and periodic…

Mesoscale and Nanoscale Physics · Physics 2019-01-09 Liping Zhou , Ren Qin , Ya-qing Zheng , Yong Wang

Skyrmions are vortex-like textures of magnetic moments found in some magnetically ordered materials. Here we describe the origin of the skyrmion and discuss the experimental realization of skyrmions in magnetic materials, the dynamic…

Strongly Correlated Electrons · Physics 2022-02-23 Tom Lancaster

Magnetic skyrmions are magnetic textures with topological protection, which are expected to be information carriers in future spintronic devices. In this work, we propose a scheme to implement hybrid magnetic skyrmions (HMS) in…

Applied Physics · Physics 2023-04-27 Y. Liu , T. T. Liu , Z. P. Hou , D. Y. Chen , Z. Fan , M. Zeng , X. B. Lu , X. S. Gao , M. H. Qin , J. M. Liu

In a recent study the coalescence of magnetic skyrmions was observed in a metallic chiral magnet Fe0.5Co0.5Si when the skyrmion phase is destroyed, and numerical simulations demonstrated the existence of a monopole at the merging point of…

Strongly Correlated Electrons · Physics 2014-04-28 Rina Takashima , Satoshi Fujimoto

Magnetic skyrmions, vortex-like swirling spin structures with quantized topological number, observed in chiral magnets, are appealing for potential applications in spintronics because it is possible to control their motion with ultralow…

Mesoscale and Nanoscale Physics · Physics 2013-10-08 Junichi Iwasaki , Masahito Mochizuki , Naoto Nagaosa

Magnetic skyrmions are particle-like topological excitations in ferromagnets, which have the topological number $Q=\pm 1$, and hence show the skyrmion Hall effect (SkHE) due to the Magnus force effect originating from the topology. Here, we…

Mesoscale and Nanoscale Physics · Physics 2016-04-25 Xichao Zhang , Yan Zhou , Motohiko Ezawa
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