Magnetic skyrmion bundles and their current-driven dynamics

Tang, Jin; Wu, Yunchao; Wang, Weiwei; Kong, Lingyao; Lv, Boyao; Wei, Wensen; Zang, Jiadong; Tian, Mingliang; Du, Haifeng

doi:10.1038/s41565-021-00954-9

Cited by 156 publications

(133 citation statements)

References 42 publications

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“…These skyrmions move slowly when the current density is less than 10 11 A m −2 but rise rapidly with the current density greater than 10 11 A m −2 . However, the achieved speed is smaller than some reported systems, such as Pt/CoFeB/MgO, [ 13 ] Pt/GdFeCo/MgO multilayer, [ 19 ] and B20‐type FeGe single crystals [ 38,39 ] presumably due to the internal pinning effect [ 8 ] resulting from the material defects of our system. For SAF skyrmions, another important feature we concern is whether the SkHE can be suppressed when they are driven by current pulses.…”

Section: Resultsmentioning

confidence: 67%

Controllable Generation of Antiferromagnetic Skyrmions in Synthetic Antiferromagnets with Thermal Effect

Chen

Cui

Han

et al. 2022

Adv Funct Materials

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Magnetic skyrmions have gained unprecedented attention for their potential applications in spintronic devices, such as non‐volatile memory, energy‐efficient, and non‐von Neumann devices. In particular, skyrmions in synthetic antiferromagnets (SAF) are believed to overcome the fundamental limitations of the widely studied ferromagnetic skyrmions in terms of size and effective current‐induced manipulation. Recently, several methods have been proposed to stabilize SAF skyrmions, however, the controllable creation and manipulation of skyrmions in SAF remains a challenge. Here, the generation, manipulation, and current‐driven dynamics of SAF skyrmions are studied by a thermal induced integrated device. The thermal created SAF skyrmion provides a prerequisite for the subsequent current‐driven dynamics research where apparent inhibition of skyrmion Hall effect is observed due to the effectively compensated topological charge. In addition, by tuning the heating current, the density of skyrmions in SAF can be effectively manipulated, which is a key factor for utilizing SAF skyrmions toward practical spintronic devices.

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Section: Resultsmentioning

confidence: 67%

Controllable Generation of Antiferromagnetic Skyrmions in Synthetic Antiferromagnets with Thermal Effect

Chen

Cui

Han

et al. 2022

Adv Funct Materials

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“…Inspired by these theoretical works on arbitrary topological charge magnetic skyrmions, Tang and coworkers [10] reported an experimental realization of magnetic skyrmions with arbitrary Q in the plate of B20-type FeGe (Figure 1(a)). Furthermore, the supporting numerical simulations provided by the authors revealed that the experimentally observed magnetic texture is characterized by essential inhomogeneities through the plate thickness (Figure 1(b)).…”

mentioning

confidence: 99%

Magnetic skyrmion bundles join the family of topological solitons

Kiselev

2022

Sci. China Phys. Mech. Astron.

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“…1(a)) [3]. These helimagnetic systems have garnered significant interest due to the rich array of spiral structures arising in their magnetization, including chiral soliton lattices in layered CrNb 3 S 6 [4] and skyrmion lattices in cubic helimagnets such as MnSi [5,6], CoZnMn alloys [7,8] and FeGe [9,10], the material on which this study focuses. In particular, the topological and transport properties of these emergent magnetic states show the potential for novel applications in advanced spintronic devices [11][12][13][14].…”

mentioning

confidence: 99%

Real-Space Experimental Observation of Magnetic Surface Spirals in FeGe

Turnbull,

Littlehales,

Wilson

et al. 2021

Preprint

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Isotropic helimagnets are known to host a diverse range of chiral magnetic states. In 2016, F.N. Rybakov et al. theorized the presence of a surface-pinned stacked spin spiral phase [F.N. Rybakov et al., 2016 New J. Phys. 18 045002], which has yet to be observed experimentally. Here we present experimental evidence for the observation of this state in lamellae of FeGe using resonant x-ray holographic imaging data and micromagnetic simulations. The identification of this state has significant implications for the stability of other coexisting spin textures, and will help complete our understanding of helimagnetic systems.

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Magnetic skyrmion bundles and their current-driven dynamics

Cited by 156 publications

References 42 publications

Controllable Generation of Antiferromagnetic Skyrmions in Synthetic Antiferromagnets with Thermal Effect

Controllable Generation of Antiferromagnetic Skyrmions in Synthetic Antiferromagnets with Thermal Effect

Magnetic skyrmion bundles join the family of topological solitons

Real-Space Experimental Observation of Magnetic Surface Spirals in FeGe

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