Control of the Half­Skyrmion Hall Effect and Its Application to Adder?Subtractor

Title
Control of the Half­Skyrmion Hall Effect and Its Application to Adder?Subtractor
Authors
김덕호양승모문경웅김창수신정훈홍진표김세권황찬용
Issue Date
2021-01
Publisher
Advanced quantum technologies
Citation
VOL 4, NO 1, 2000060
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 skyrmion­based 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 half­skyrmion 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 current­driven half­skyrmions in the desired direction. Furthermore, based on the unique advantages in half­skyrmions, the potential of half­skyrmions application beyond skyrmion­based electronics is also demonstrated by presenting simple half­skyrmion­based addition/subtraction operation. The findings of controllability of 2D half­skyrmion motion will provide new perspectives on utilization of topological solitons for device applications.
URI
http://pubs.kist.re.kr/handle/201004/72393
ISSN
2511-9044
Appears in Collections:
KIST Publication > Article
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