Control of the Half-Skyrmion Hall Effect and Its Application to Adder-Subtractoropen access
- Authors
- Yang, Seungmo; Moon, Kyoung-Woong; Kim, Changsoo; Kim, Duck-Ho; Shin, Jeonghun; Hong, Jinpyo; Kim, Se Kwon; Hwang, Chanyong
- Issue Date
- Jan-2021
- Publisher
- WILEY
- Keywords
- adder; half; skyrmions; skyrmions; skyrmion Hall effect; subtractor
- Citation
- Advanced Quantum Technologies, v.4, no.1, pp.1 - 9
- Indexed
- SCIE
SCOPUS
- Journal Title
- Advanced Quantum Technologies
- Volume
- 4
- Number
- 1
- Start Page
- 1
- End Page
- 9
- URI
- https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/144007
- DOI
- 10.1002/qute.202000060
- ISSN
- 2511-9044
- Abstract
- Skyrmions have attracted a great attention in spintronics because of their potential use as robust information carriers with distinctive protection. Though the realization of skyrmion-based devices requires flexible control of a skyrmion motion, achieving such a skyrmion motion has been hampered by the skyrmion Hall effect (SkHE), which refers to the presence of a finite angle between a current and the skyrmion trajectory. Here, new insight for the precise control of half-skyrmion motion is presented, including complete suppression of the SkHE by deforming the internal structure of skyrmions, which is experimentally achieved by external magnetic field to steer current-driven half-skyrmions in the desired direction. Furthermore, based on the unique advantages in half-skyrmions, the potential of half-skyrmions application beyond skyrmion-based electronics is also demonstrated by presenting simple half-skyrmion-based addition/subtraction operation. The findings of controllability of 2D half-skyrmion motion will provide new perspectives on utilization of topological solitons for device applications.
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