Journal
JOURNAL OF APPLIED PHYSICS
Volume 122, Issue 15, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.4999013
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Funding
- JSPS RONPAKU (Ph.D. dissertation) Program
- Chinese Postdoctoral Science Foundation [2015M570024]
- National Natural Science Foundation of China [61501013, 61471015, 61571023, 11574137]
- Beijing Municipal Commission of Science and Technology [D15110300320000]
- International Collaboration Project from the Ministry of Science and Technology of China [2015DFE12880]
- President's Fund of CUHKSZ
- Shenzhen Fundamental Research Fund [JCYJ20160331164412545, JCYJ20170410171958839]
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Magnetic skyrmion is a topologically protected domain-wall structure at nanoscale, which could serve as a basic building block for advanced spintronic devices. Here, we propose a microwave field-driven skyrmionic device with the transistor-like function, where the motion of a skyrmion in a voltage-gated ferromagnetic nanotrack is studied by micromagnetic simulations. It is demonstrated that the microwave field can drive the motion of a skyrmion by exciting the propagating spin waves, and the skyrmion motion can be governed by a gate voltage. We also investigate the microwave current-assisted creation of a skyrmion to facilitate the operation of the transistor-like skyrmionic device on the source terminal. It is found that the microwave current with an appropriate frequency can reduce the threshold current density required for the creation of a skyrmion from the ferromagnetic background. The proposed transistor-like skyrmionic device operated with the microwave field and current could be useful for building future skyrmion-based circuits. Published by AIP Publishing.
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