Breaking the topological protection of target skyrmions by the excitation of spin wave modes under microwave magnetic field

Shen, Xiaochen; Zhao, Rongzhi; Ji, Lü; Hu, Chenglong; Ren, Wenling; Chen, Wenchao; Li, Yixing; Zhang, Jian; Zhang, Xuefeng; Dong, Xinglong

doi:10.1016/j.jmmm.2021.168521

Cited by 4 publications

(2 citation statements)

References 41 publications

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“…As briefly mentioned in section 4.1, Zhang et al [79] realized the dynamic switching of the skyrmion polarity by microwave fields, with the microwave frequency just corresponding to the excitation frequency of the breathing mode and the mixed spinwave mode of the skyrmion. Later, Shen et al [174] further demonstrated that such excitation of spin wave modes can also achieve the transition of kπ-skyrmions by breaking the topological protection. Moreover, recent report [175] suggested that the skyrmion shape can also be manipulated by exciting spin excitation modes with different PMA.…”

Section: Spin Excitationmentioning

confidence: 99%

Micromagnetic manipulation and spin excitation of skyrmionic structures

Bo¹,

Hu²,

Zhao³

et al. 2022

J. Phys. D: Appl. Phys.

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Magnetic skyrmions have attracted enormous research interest across a wide range of fields, from condensed matter physics to material science, since the first observation in 2009. Abundant theoretical, computational, and experimental studies have contributed to this emerging interdiscipline: skyrmionics. Especially, great expectations have been placed on exploiting the physics and dynamics of magnetic skyrmions as potential information carriers. In this topical review, we particularly focus on the computational studies of skyrmions during the last decade. After briefly introducing the mechanism of micromagnetic simulations, we review and discuss the manipulation of skyrmions, i. e., their creation, transformation, motion, and spin excitation, by both traditional and advanced methods, including electric currents, magnetic fields, spin waves, microwaves, etc. We take magnetic skyrmion as a typical example, while other skyrmion-related magnetic structures such as skyrmioniums and skyrmion tubes are also slightly involved. Through this review, we hope to give some insights into the further development of magnetic skyrmions in spintronics.

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Section: Spin Excitationmentioning

confidence: 99%

Micromagnetic manipulation and spin excitation of skyrmionic structures

Bo¹,

Hu²,

Zhao³

et al. 2022

J. Phys. D: Appl. Phys.

Self Cite

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“…[19][20][21] Additionally, from the applications of strain-induced surface acoustic waves (SAWs) another efficient method of generating and manipulating skyrmions has been found. [22][23][24] Particularly, the periodical skyrmion arrangement can form magnon bands and bandgaps. Furthermore, the magnon band structure can be modulated by external effects such as magnetic fields and electric fields which will change the magnetic configuration of the skyrmion.…”

Section: Introductionmentioning

confidence: 99%

Tunable dispersion relations manipulated by strain in skyrmion-based magnonic crystals

Jin

et al. 2024

Chinese Phys. B

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In this paper, we theoretically investigated the propagation characteristics of spin waves in skyrmion-based magnonic crystals. It is found that the dispersion relations can be manipulated by strains through magneto-elastic coupling. Especially, the allowed bands and forbidden bands in dispersion relations shifted to higher frequency with changing strains from compressive to tensile, while shifting to lower frequency with changing strains from tensile to compressive. We also confirmed that the spin waves with specific frequencies could pass the magnonic crystal or be blocked by tuning the strains. The result provides an advanced platform for tunable skyrmion-based spin wave devices.

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Tunable dynamic microwave properties of a magnetic skyrmion manipulated by strains

Yu,

Jiao,

Zhou

et al. 2023

AIP Advances

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In this paper, we theoretically studied the tunable dynamic microwave properties of a magnetic skyrmion manipulated by strains through micromagnetic simulations. The strains are induced by voltage due to the converse piezoelectric effect and then applied to modulate the dynamic characteristics through the magneto-elastic coupling effect. The tunable dynamic microwave characteristics of a breathing mode and gyration modes are investigated. The resonant frequency of the breathing mode increases abruptly and then decreases slowly with the strain changing from compressive to tensile. A clockwise gyrotropic mode has been obtained, and the resonant frequency keeps increasing with the strain changing from compressive to tensile. In particular, strains can induce different gyrotropic trajectories of the skyrmion driven by an in-plane microwave field. Our results may contribute to the understanding of dynamic properties of skyrmions manipulated by voltage-induced strains and provide a method to realize tunable spintronic microwave devices based on skyrmion.

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Breaking the topological protection of target skyrmions by the excitation of spin wave modes under microwave magnetic field

Cited by 4 publications

References 41 publications

Micromagnetic manipulation and spin excitation of skyrmionic structures

Micromagnetic manipulation and spin excitation of skyrmionic structures

Tunable dispersion relations manipulated by strain in skyrmion-based magnonic crystals

Tunable dynamic microwave properties of a magnetic skyrmion manipulated by strains

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