Analogous Faraday effect of spin waves propagating in ferromagnetic nanotubes

doi:10.1088/1674-1056/ae1ff7

中国物理B ›› 2026, Vol. 35 ›› Issue (4): 47501-047501.doi: 10.1088/1674-1056/ae1ff7

Analogous Faraday effect of spin waves propagating in ferromagnetic nanotubes

Li Zhou(周利)†, Zhixuan Ren(任芷萱), and Ming Yan(颜明)‡

Physics Department, Shanghai University, Shanghai 200444, China

收稿日期:2025-08-17 修回日期:2025-11-16 接受日期:2025-11-17 出版日期:2026-03-24 发布日期:2026-03-24
基金资助:
This research was funded by the National Natural Science Foundation of China (Grant Nos. 11774218 and 11701358).

Analogous Faraday effect of spin waves propagating in ferromagnetic nanotubes

Li Zhou(周利)†, Zhixuan Ren(任芷萱), and Ming Yan(颜明)‡

Physics Department, Shanghai University, Shanghai 200444, China

Received:2025-08-17 Revised:2025-11-16 Accepted:2025-11-17 Online:2026-03-24 Published:2026-03-24
Contact: Li Zhou, Ming Yan E-mail:zl22720141@shu.edu.cn;myan@shu.edu.cn
Supported by:
This research was funded by the National Natural Science Foundation of China (Grant Nos. 11774218 and 11701358).

摘要/Abstract

摘要： We present a micromagnetic study of magnetization dynamics in ferromagnetic nanotubes. The sample is radially magnetized in equilibrium with the presence of a strong anisotropy. Micromagnetic simulations reveal that spin waves (SWs) propagating in the tube exhibit a novel effect, analogous to the well-known Faraday magneto-optic effect. Specifically, the location of the nodes/antinodes of the standing waves formed in the azimuthal direction undergoes a continuous rotation during the wave propagation under the influence of an external magnetic field. The physical mechanism is essentially the same as the Faraday effect, i.e., the breaking of the chiral symmetry by the external field. A qualitative explanation is presented by analytically solving the equation of motion of magnetization taking into account the exchange interaction. Our results may bear potential applications in the development of future spintronic devices based on SW propagation.

关键词: spin waves, micromagnetic simulation, ferromagnetic nanotubes, chirality

Abstract: We present a micromagnetic study of magnetization dynamics in ferromagnetic nanotubes. The sample is radially magnetized in equilibrium with the presence of a strong anisotropy. Micromagnetic simulations reveal that spin waves (SWs) propagating in the tube exhibit a novel effect, analogous to the well-known Faraday magneto-optic effect. Specifically, the location of the nodes/antinodes of the standing waves formed in the azimuthal direction undergoes a continuous rotation during the wave propagation under the influence of an external magnetic field. The physical mechanism is essentially the same as the Faraday effect, i.e., the breaking of the chiral symmetry by the external field. A qualitative explanation is presented by analytically solving the equation of motion of magnetization taking into account the exchange interaction. Our results may bear potential applications in the development of future spintronic devices based on SW propagation.

Key words: spin waves, micromagnetic simulation, ferromagnetic nanotubes, chirality

中图分类号: (Dynamic properties?)

75.40.Gb

75.30.Ds (Spin waves) 75.78.Cd (Micromagnetic simulations ?) 75.78.-n (Magnetization dynamics)

Li Zhou(周利), Zhixuan Ren(任芷萱), and Ming Yan(颜明). Analogous Faraday effect of spin waves propagating in ferromagnetic nanotubes[J]. 中国物理B, 2026, 35(4): 47501-047501.

Li Zhou(周利), Zhixuan Ren(任芷萱), and Ming Yan(颜明). Analogous Faraday effect of spin waves propagating in ferromagnetic nanotubes[J]. Chin. Phys. B, 2026, 35(4): 47501-047501.

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Analogous Faraday effect of spin waves propagating in ferromagnetic nanotubes

Analogous Faraday effect of spin waves propagating in ferromagnetic nanotubes

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