Magnetic skyrmions are topological quasiparticles with nanoscale size and high mobility, which have potential applications in information storage and spintronic devices. Here, we computationally investigate the dynamics of isolated skyrmions in a ferromagnetic racetrack, where magnetic properties of the edges are enhanced and modified, forming a channel with lower magnetic anisotropy for skyrmion motion. It is found that the rectangular notch at the edge can have a pinning effect on the skyrmion and enrich the dynamics of the skyrmion. Based on the racetrack with modified edges and the notch, we design a racetrack that realizes the skyrmionic logic AND, OR, and NOT gates as well as the diode in the same magnetic racetrack. It is found that the driving current density could be much smaller than those used in previous designs of skyrmion-based logic gates. By slightly altering the shape of the racetrack, we also design the NAND and NOR gates. Finally, we study the feasibility of our design at finite temperatures. Our results may contribute to the design of nonvolatile spintronic devices with integrated multiple functions and ultra-low energy consumption.
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25 July 2022
Research Article|
July 26 2022
Realization of the skyrmionic logic gates and diodes in the same racetrack with enhanced and modified edges
Yun Shu
;
Yun Shu
(Conceptualization, Formal analysis, Investigation, Methodology, Software, Validation, Writing – original draft)
1
College of Physics and Electronic Engineering, Sichuan Normal University
, Chengdu 610068, China
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Qianrui Li
;
Qianrui Li
(Conceptualization, Writing – original draft)
1
College of Physics and Electronic Engineering, Sichuan Normal University
, Chengdu 610068, China
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Jing Xia
;
Jing Xia
(Writing – review & editing)
1
College of Physics and Electronic Engineering, Sichuan Normal University
, Chengdu 610068, China
2
Center for Magnetism and Spintronics, Sichuan Normal University
, Chengdu 610068, China
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Ping Lai;
Ping Lai
(Writing – review & editing)
3
School of Electronic Information and Automation, Aba Teachers University
, Wenchuan 623002, China
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Zhipeng Hou
;
Zhipeng Hou
(Writing – review & editing)
4
Guangdong Provincial Key Laboratory of Optical Information Materials and Technology
, Guangzhou 510006, China
5
Institute for Advanced Materials, South China Academy of Advanced Optoelectronics, South China Normal University
, Guangzhou 510006, China
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Yonghong Zhao;
Yonghong Zhao
(Writing – review & editing)
1
College of Physics and Electronic Engineering, Sichuan Normal University
, Chengdu 610068, China
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Degang Zhang;
Degang Zhang
(Writing – review & editing)
1
College of Physics and Electronic Engineering, Sichuan Normal University
, Chengdu 610068, China
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Yan Zhou
;
Yan Zhou
(Writing – review & editing)
6
School of Science and Engineering, The Chinese University of Hong Kong
, Shenzhen, Guangdong 518172, China
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Xiaoxi Liu
;
Xiaoxi Liu
(Writing – review & editing)
7
Department of Electrical and Computer Engineering, Shinshu University
, Wakasato 4-17-1, Nagano 380-8553, Japan
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Guoping Zhao
Guoping Zhao
a)
(Writing – original draft, Writing – review & editing)
1
College of Physics and Electronic Engineering, Sichuan Normal University
, Chengdu 610068, China
2
Center for Magnetism and Spintronics, Sichuan Normal University
, Chengdu 610068, China
a)Author to whom correspondence should be addressed: zhaogp@uestc.edu.cn
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a)Author to whom correspondence should be addressed: zhaogp@uestc.edu.cn
Appl. Phys. Lett. 121, 042402 (2022)
Article history
Received:
April 26 2022
Accepted:
July 08 2022
Citation
Yun Shu, Qianrui Li, Jing Xia, Ping Lai, Zhipeng Hou, Yonghong Zhao, Degang Zhang, Yan Zhou, Xiaoxi Liu, Guoping Zhao; Realization of the skyrmionic logic gates and diodes in the same racetrack with enhanced and modified edges. Appl. Phys. Lett. 25 July 2022; 121 (4): 042402. https://doi.org/10.1063/5.0097152
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