微磁学的新视野:拓扑磁性结构的电场控制

IF 0.4 4区 物理与天体物理 Q4 PHYSICS, MULTIDISCIPLINARY
A. S. Kaminskiy, A. A. Karpacheva, T. B. Kosykh, N. V. Myasnikov, E. P. Nikolaeva, A. V. Nikolaev, A. P. Pyatakov, A. S. Sergeev
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引用次数: 0

摘要

在磁电介质中,除了传统的微磁相互作用,如交换刚度、磁各向异性和静磁相互作用外,热力学势中还应加入一个额外的项,该项与电场和磁化矢量的空间导数成正比。这种不均匀的磁电相互作用导致畴边界的能量调制,表现为磁畴壁对电极的静电吸引或斥力,它们在条纹电极附近的折射,以及电场诱导的磁泡畴成核。在亚微米水平上,非均匀磁电相互作用使电场能够控制布洛赫线、畴壁内部的不均匀性,并支持磁化和skyrmions的涡旋状态。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

New Horizons of Micromagnetism: Electric Field Control of Topological Magnetic Structures

New Horizons of Micromagnetism: Electric Field Control of Topological Magnetic Structures

In magnetoelectric media, besides conventional micromagnetic interactions, such as exhange stiffnes, magnetic anisotropy, and magnetostatic interaction, an additional term should be added into the thermodynamic potential, which is proportional to the electric field and spatial derivatives of the magnetization vector. This inhomogeneous magnetoelectric interaction leads to the energy modulation in domain boundaries, manifesting as electrostatic attraction or repulsion of magnetic domain walls to the electrode, their refraction in the vicinity of the stripe electrode, as well as electric field-induced magnetic bubble domain nucleation. At the submicron level, the inhomogeneous magnetoelectric interaction enables electric field control of Bloch lines, the inhomogeneities inside the domain walls, and supports the vortex state of magnetization and skyrmions.

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来源期刊
Moscow University Physics Bulletin
Moscow University Physics Bulletin PHYSICS, MULTIDISCIPLINARY-
CiteScore
0.70
自引率
0.00%
发文量
129
审稿时长
6-12 weeks
期刊介绍: Moscow University Physics Bulletin publishes original papers (reviews, articles, and brief communications) in the following fields of experimental and theoretical physics: theoretical and mathematical physics; physics of nuclei and elementary particles; radiophysics, electronics, acoustics; optics and spectroscopy; laser physics; condensed matter physics; chemical physics, physical kinetics, and plasma physics; biophysics and medical physics; astronomy, astrophysics, and cosmology; physics of the Earth’s, atmosphere, and hydrosphere.
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