Dynamic behavior and stability control of skyrmionium in periodic PMA/damping gradient nanowires

IF 2.7 3区 物理与天体物理 Q2 PHYSICS, APPLIED Journal of Applied Physics Pub Date : 2024-09-03 DOI:10.1063/5.0223052
Luowen Wang, Sunan Wang, Wenjin Li, Xiaoping Gao, Ziyang Yu, Qingbo Liu, Lun Xiong, Zhihong Lu, Yue Zhang, Rui Xiong
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Abstract

Magnetic skyrmioniums—with a composite structure comprising two skyrmions with opposite topological charges, exhibit unique dynamic behaviors that are crucial for technological advancements and have application potential for high-density and nonvolatile memory. This study explores the impact of periodic perpendicular magnetic anisotropy (PMA) and damping gradients on skyrmioniums. Utilizing the object oriented micromagnetic framework for detailed simulations, the effective control and enhancement of the skyrmionium stability and mobility through the periodic modulation of PMA and damping gradients is demonstrated. The results demonstrate the dynamic behavior and stability control of skyrmioniums in periodic PMA/damping gradient nanowires. Moreover, the critical influence of the periodic gradient on the skyrmionium motion and stability is highlighted. The results present new avenues for developing advanced memory technologies, leveraging skyrmionium's unique nonlinear behaviors to improve the device performance and reliability.
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周期性 PMA/阻尼梯度纳米线中天铱的动态行为和稳定性控制
磁性 skyrmioniums(由两个拓扑电荷相反的 skyrmions 组成的复合结构)表现出独特的动态行为,这对技术进步至关重要,并具有应用于高密度和非易失性存储器的潜力。本研究探讨了周期性垂直磁各向异性(PMA)和阻尼梯度对天葱的影响。利用面向对象的微磁框架进行了详细模拟,证明了通过周期性调制 PMA 和阻尼梯度,可以有效控制和增强天青铵的稳定性和流动性。结果证明了周期性 PMA/阻尼梯度纳米线中天鎓的动态行为和稳定性控制。此外,还强调了周期梯度对天铱运动和稳定性的关键影响。这些结果为开发先进的存储器技术提供了新的途径,利用天铱独特的非线性行为提高了器件的性能和可靠性。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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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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