纳米级天铱的超快操作

IF 2.7 3区 物理与天体物理 Q2 PHYSICS, APPLIED
H. M. Dong, P. P. Fu, Y. F. Duan, K. Chang
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引用次数: 0

摘要

下一代磁性器件的发展取决于对纳米级磁性微结构的快速操控。本文提出了一种通用方法,通过高通量微磁模拟,快速可靠地生成、控制和驱动纳米级天鎓。在垂直磁场的作用下,在单层磁性纳米盘中实现了skyrmionium和skyrmion状态之间的超快切换,并迅速改变了它们的极性。交变磁场下的转换机制与稳定磁场下的转换机制不同。研究人员发现了新的天电离纹理,如花朵状天电离和风车状天电离。此外,利用较弱的自旋极化电流,这种纳米尺度的天空离子可以在纳米带中快速稳定地移动。研究人员对超快操纵天鎓的物理机制进行了明确的讨论。这项工作为拓扑天电离结构的操纵和应用提供了进一步的物理见解,有助于开发低功耗和纳米存储设备。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Ultrafast manipulations of nanoscale skyrmioniums
The advancement of next-generation magnetic devices depends on fast manipulating magnetic microstructures at the nanoscale. A universal method is presented for rapid and reliable generating, controlling, and driving nano-scale skyrmioniums, through high-throughput micromagnetic simulations. Ultrafast switches are realized between skyrmionium and skyrmion states and rapidly change their polarities in monolayer magnetic nanodisks by perpendicular magnetic fields. The transition mechanism by alternating magnetic fields differs from that under steady magnetic fields. New skyrmionic textures, such as flower-like and windmill-like skyrmions, are discovered. Moreover, this nanoscale skyrmionium can move rapidly and stably in nanoribbons using weaker spin-polarized currents. Explicit discussions are held regarding the physical mechanisms involved in ultrafast manipulations of skyrmioniums. This work provides further physical insights into the manipulation and application of topological skyrmionic structures for developing low-power consumption and nanostorage devices.
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来源期刊
Journal of Applied Physics
Journal of Applied Physics 物理-物理:应用
CiteScore
5.40
自引率
9.40%
发文量
1534
审稿时长
2.3 months
期刊介绍: The Journal of Applied Physics (JAP) is an influential international journal publishing significant new experimental and theoretical results of applied physics research. Topics covered in JAP are diverse and reflect the most current applied physics research, including: Dielectrics, ferroelectrics, and multiferroics- Electrical discharges, plasmas, and plasma-surface interactions- Emerging, interdisciplinary, and other fields of applied physics- Magnetism, spintronics, and superconductivity- Organic-Inorganic systems, including organic electronics- Photonics, plasmonics, photovoltaics, lasers, optical materials, and phenomena- Physics of devices and sensors- Physics of materials, including electrical, thermal, mechanical and other properties- Physics of matter under extreme conditions- Physics of nanoscale and low-dimensional systems, including atomic and quantum phenomena- Physics of semiconductors- Soft matter, fluids, and biophysics- Thin films, interfaces, and surfaces
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