期刊
APPLIED PHYSICS LETTERS
卷 117, 期 1, 页码 -出版社
AMER INST PHYSICS
DOI: 10.1063/5.0012706
关键词
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资金
- President's Fund of CUHKSZ
- Longgang Key Laboratory of Applied Spintronics
- Shenzhen Peacock Group Plan [KQTD20180413181702403]
- Guangdong Basic and Applied Basic Research Foundation [2019A1515110713]
- National Natural Science Foundation of China [11974298, 61961136006, 51901081, 11604148, 11874410, 51771127, 51571126, 51772004]
- National Key RAMP
- D Program of China [2017YFA0303202, 2017YFA206303]
- Key Research Program of the Chinese Academy of Sciences [KJZD-SW-M01]
- JSPS KAKENHI [JP18H03676, JP17K05490, 17K19074, 26600041, 22360122]
- CREST of JST [JPMJCR16F1, JPMJCR1874]
- Australian Research Council [DP200101027]
- Cooperative Research Project Program at the Research Institute of Electrical Communication, Tohoku University
- Grants-in-Aid for Scientific Research [22360122, 17K19074, 26600041] Funding Source: KAKEN
Magnetic skyrmionium can be used as a nanometer-scale non-volatile information carrier, which shows no skyrmion Hall effect due to its special structure carrying zero topological charge. Here, we report the static and dynamic properties of an isolated nanoscale skyrmionium in a frustrated magnetic monolayer, where the skyrmionium is stabilized by competing interactions. The frustrated skyrmionium has a size of about 10nm, which can be further reduced by tuning perpendicular magnetic anisotropy or the magnetic field. It is found that the nanoscale skyrmionium driven by the damping-like spin-orbit torque shows directional motion with a favored Bloch-type helicity. A small driving current or magnetic field can lead to the transformation of an unstable Neel-type skyrmionium to a metastable Bloch-type skyrmionium. A large driving current may result in the distortion and collapse of the Bloch-type skyrmionium. Our results are useful for the understanding of frustrated skyrmionium physics, which also provide guidelines for the design of spintronic devices based on topological spin textures.
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