Manipulation of Magnonic Activity by Electric Currents in Ferromagnetic Nanocylinders

被引：0
作者：
Li, Zhisheng [1 ]
Yang, Mingming [2 ]
Fan, Mingming [1 ]
Zeng, Xiaoyan [3 ]
Yan, Ming [1 ]
机构：
[1] Shanghai Univ, Dept Phys, Shanghai 200444, Peoples R China
[2] Zhejiang Univ Water Resources & Elect Power, Hangzhou 310018, Peoples R China
[3] Shanghai Univ, Dept Math, Shanghai 200444, Peoples R China
来源：
SPIN | 2024年 / 14卷 / 04期
关键词：
Micromagnetic simulation; spin-transfer torque; magnonic activity; chiral symmetry; INDUCED MAGNETIZATION REVERSAL; DOMAIN-WALL; SPIN; DRIVEN; DYNAMICS; MEMORY;
D O I：
10.1142/S2010324724500139
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
Electric currents passing through ferromagnets can impact the magnetization dynamics via the so-called spin-transfer torque (STT) effect. In this paper, we present a theoretical study on the current influence on magnonic activity, a recently reported spin wave (SW) chiral effect in ferromagnetic nanotubes. By micromagnetic simulations, we show that an electric current can cause a significant change in the rotatory power of the SW modes propagating in a longitudinally magnetized nanotube. This result is well explained by using the Fresnel model in optics assuming a SW circular birefringence. An analytical method is developed to solve the first-order mode, yielding perfect agreements with the numerical results. Our results provide a new approach to manipulate the SW propagating properties in ferromagnetic nanocylinders.
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页数：7
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