Journal
IEEE TRANSACTIONS ON MAGNETICS
Volume 53, Issue 3, Pages -Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/TMAG.2016.2641384
Keywords
Magnetic skyrmions; micromagnetics; racetrack memories; spintronics
Funding
- JSPS RONPAKU (Dissertation Ph.D.) Program
- National Natural Science Foundation of China [11074179, 10747007]
- Construction Plan for Scientific Research Innovation Teams of Universities in Sichuan [12TD008]
- Shenzhen Fundamental Research Fund [JCYJ20160331164412545]
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Reliable transport of magnetic skyrmions is required for any future skyrmion-based information processing devices. Here, we present a micromagnetic study of the in-plane current-driven motion of a skyrmion in a ferromagnetic nanotrack with spatially sinusoidally varying Gilbert damping and/or non-adiabatic spin-transfer torque (STT) coefficients. It is found that the skyrmion moves in a sinusoidal pattern as a result of the spatially varying Gilbert damping and/or non-adiabatic STT in the nanotrack, which could prevent the destruction of the skyrmion caused by the skyrmion Hall effect. The results provide a guide for designing and developing the skyrmion transport channel in skyrmion-based spintronic applications.
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