Results 1 to 10 of about 8,313 (238)

Bloch-type photonic skyrmions in optical chiral multilayers

Physical Review Research, 2021
Magnetic skyrmions are topological quasiparticles in magnetization. Recently, as one of their photonic counterparts, Néel-type photonic skyrmions were discovered in evanescent electromagnetic waves.
Qiang Zhang, Peng Shi, Zhenwei Xie
exaly   +2 more sources

Observation of Magnetic-Anisotropy Crossover and High-Temperature Skyrmions in the Dirac Magnet Fe₃Ge with a Distorted Kagome Lattice. [PDF]

Adv Sci (Weinh)
A temperature‐driven magnetic anisotropy crossover is revealed in the Dirac kagome magnet Fe3Ge with a distorted kagome lattice. The transition from easy‐plane to easy‐axis magnetic anisotropy stabilizes robust Bloch‐type skyrmions over an exceptionally wide temperature window of 375–650 K.
Huang Y, Lv X, Li B, Xu C, Alltrin D, Ma X, Yang W, Zhou W, Xing X, Lin WC, Sankar R, Smidman M, Cao S, Qian D, Che R, Xu X.   +15 more
europepmc   +2 more sources

Spontaneous emergence of skyrmions beyond room temperature in boron-doped CrTe [PDF]

Communications Materials
Magnetic skyrmions are vortex-like spin textures that exhibit remarkable emergent phenomena and hold great promise for applications in spintronics, magnonic devices, and neuromorphic computing.
Jagannath Jena, Konstantin Holst, Börge Göbel, Yangkun He, Binoy Krishna Hazra, Pedram Bassirian, Katayoon Mohseni, Georg Woltersdorf, Ingrid Mertig, Holger Meyerheim, Claudia Felser, Stuart S. P. Parkin   +11 more
doaj   +2 more sources

Programmable Topological Magnetic Textures in Above-Room-Temperature 2D Ferromagnet Fe₃GaTe₂. [PDF]

Adv Sci (Weinh)
This work demonstrates the programmable generation and deterministic modulation of magnetic skyrmion bags with high‐order topological numbers in the above‐room‐temperature 2D ferromagnet Fe3GaTe2 (FGaT) via current‐pulse control. Furthermore, highly efficient electrical manipulation and current‐driven parallel motion of these high‐order topological ...
Shi H, Xi Y, Zhang J, Liu J, Ren Z, Zhang S, Hao W, Feng H, Du Y.   +8 more
europepmc   +2 more sources

Interactions between atomic-scale skyrmions in 2D chiral magnets [PDF]

Scientific Reports
Skyrmions are topologically stable spin textures that hold great promise as information carriers in next-generation magnetic memories. Recently, skyrmions only a few nanometers in radius have been observed in several materials, opening a path toward ...
Mai Kameda, Koji Kobayashi, Yuki Kawaguchi   +2 more
doaj   +2 more sources

Room-Temperature Skyrmionic Synapse in 2D Ferromagnet Fe₃GaTe₂ Operating via Collective Spin Texture Transformation. [PDF]

Adv Mater
We demonstrate a neuromorphic synapse in 2D Fe3GaTe2 flakes. The device operates via a current‐driven transformation from a skyrmion‐lattice to a stripe‐domain state, yielding a linear anomalous Hall resistance response with a tunable slope to enable multiply‐accumulate operations. Simulations confirm its viability in artificial neural networks.
Huang J, Zhu T, Cai P, Ma X, Wang Z, Zhang R, Hao Y, Lu J, He L, Xu J, Zhang Y, Jiang W, Tao J, Lei S, Parchinskiy P, Teng J, Wang L, Niu W, Santos EJG, Zhang X, Li P.   +20 more
europepmc   +2 more sources

Chip-integrated metasurface-enabled single-photon skyrmion sources [PDF]

Nature Communications
Skyrmions, topologically stable field configurations, have recently emerged in classical optics as structured light for high-density data applications. Achieving controllable on-chip generation of single-photon skyrmions, while being highly desirable for
Xujing Liu, Yinhui Kan, Shailesh Kumar, Liudmilla F. Kulikova, Valery A. Davydov, Viatcheslav N. Agafonov, Sergey I. Bozhevolnyi   +6 more
doaj   +2 more sources

Mirroring Skyrmions in Synthetic Antiferromagnets via Modular Design

Nanomaterials, 2023
Skyrmions are promising for the next generation of spintronic devices, which involves the production and transfer of skyrmions. The creation of skyrmions can be realized by a magnetic field, electric field, or electric current while the controllable ...
Panluo Deng, Fengjun Zhuo, Hang Li, Zhenxiang Cheng   +3 more
doaj   +1 more source

Current‐Induced Reversible Split of Elliptically Distorted Skyrmions in Geometrically Confined Fe3Sn2 Nanotrack

Advanced Science, 2023
Skyrmions are swirling spin textures with topological characters promising for future spintronic applications. Skyrmionic devices typically rely on the electrical manipulation of skyrmions with a circular shape.
Zhipeng Hou, Qingping Wang, Qiang Zhang, Senfu Zhang, Chenhui Zhang, Guofu Zhou, Xingsen Gao, Guoping Zhao, Xixiang Zhang, Wenhong Wang, Junming Liu   +10 more
doaj   +1 more source

Dynamics and stability of skyrmions in a bent nano-beam

New Journal of Physics, 2022
Magnetic skyrmions are attracting much attention due to their nontrivial topology and high mobility to electric current. Nevertheless, suppression of the skyrmion Hall effect and maintaining high velocity of skyrmions with low energy cost are two major ...
Anruo Zhong, Xiaoming Lan, Yangfan Hu, Biao Wang   +3 more
doaj   +1 more source