Magnon-driven dynamics of frustrated skyrmion in synthetic antiferromagnets: effect of skyrmion helicity oscillation

Jin, Zhejunyu; Liu, Tingting; Liu, Yang; Hou, Zhipeng; Chen, Deyang; Fan, Zhen; Zeng, Min; Lu, Xubing; Gao, Xingsen; Qin, Minghui; Liu, Junming

doi:10.1088/1367-2630/ac8175

Cited by 4 publications

(1 citation statement)

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“…A variety of configurations have been explored for the electric control of magnetism, such as skyrimions and magnetic domain walls. [1][2][3][4][5][6][7] Specifically, in metallic and insulating magnets, electric driven magnetic structure is more ingenious to manipulate and produce ultralow power consumption, so electric control is highly preferred over magnetism for spin structure regulation. The early investigators have opened the way to efficient control of magnetization through charge transport.…”

Section: Introductionmentioning

confidence: 99%

Chiral current regulation and detection of Berry phase in triangular triple quantum dots

Liu

Yuandong

et al. 2023

Chinese Phys. B

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Based on the hierarchical equations of motion (HEOM) calculation, we theoretically investigate the corresponding control of a triangular triple quantum dot (TTQD) ring which is connected to two reservoirs. We initially demonstrate by adding bias voltage and further adjusting the coupling strength between quantum dots, the chiral current induced by bias will go through a transformation of clockwise to counterclockwise direction and a unprecedented effective Hall angle will be triggered. The transformation of this process is very rapid, with a corresponding characteristic time from 80-200 ps. In addition, by adding magnetic flux to compensate the chiral current in the original system, we elucidate the relationship between the applied magnetic flux and Berry phase, which can realize direct measurement of chiral current and reveal the magnetoelectric coupling relationship.

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Section: Introductionmentioning

confidence: 99%

Chiral current regulation and detection of Berry phase in triangular triple quantum dots

Liu

Yuandong

et al. 2023

Chinese Phys. B

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Rotational motion of skyrmion driven by optical vortex in frustrated magnets

Lei,

Yang,

Tang

et al. 2024

Applied Physics Letters

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Effective control of skyrmion rotation is of significant importance in designing skyrmion-based nano-oscillators. In this work, we numerically study the optical vortex-driven skyrmion rotation in frustrated magnets using the Landau–Lifshitz–Gilbert simulations. The skyrmion rotation is induced by the orbital angular momentum (OAM) transfer from the optical vortex to the skyrmion, which is regardless of the sign of the OAM quantum number m due to the helicity degree of freedom of the frustrated skyrmion. This property highly broadens the parameter range of the optical vortex in controlling the skyrmion rotation. The direction of the rotation is determined by the sign of m, and the radius and angular velocity depend on the magnitude of m, light polarization, and intensity. Interestingly, the helicity oscillation induced by the linearly polarized beam is much slower than that driven by the circularly polarized beam with a same intensity, resulting in a faster rotation of the skyrmion. This phenomenon demonstrates the advantage of the linearly polarized beam in controlling the dynamics of the frustrated skyrmion, benefiting energy-saving and high-efficient device design.

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