Dynamics of Polar Skyrmion Bubbles under Electric Fields

Zhu，Ruixue1; Jiang，Zhexin2; Zhang，Xinxin1; Zhong，Xiangli3; Tan，Congbing4; Liu，Mingwei4; Sun，Yuanwei1; Li，Xiaomei1,5; Qi，Ruishi1; Qu，Ke1; Liu，Zhetong1; Wu，Mei1; Li，Mingqiang1; Huang，Boyuan7; Xu，Zhi5; Wang，Jinbin3; Liu，Kaihui9,10; Gao，Peng1,10; Wang，Jie2,8; Li，Jiangyu6; Bai，Xuedong5,11

2022-09-02

10.1103/PhysRevLett.129.107601

PHYSICAL REVIEW LETTERS   影响因子和分区

0031-9007

1079-7114

Room-temperature polar skyrmions, which have been recently discovered in oxide superlattice, have received considerable attention for their potential applications in nanoelectronics owing to their nanometer size, emergent chirality, and negative capacitance. For practical applications, their manipulation using external stimuli is a prerequisite. Herein, we study the dynamics of individual polar skyrmions at the nanoscale via in situ scanning transmission electron microscopy. By monitoring the electric-field-driven creation, annihilation, shrinkage, and expansion of topological structures in real space, we demonstrate the reversible transformation among skyrmion bubbles, elongated skyrmions, and monodomains. The underlying mechanism and interactions are discussed in conjunction with phase-field simulations. The electrical manipulation of nanoscale polar skyrmions allows the tuning of their dielectric permittivity at the atomic scale, and the detailed knowledge of their phase transition behaviors provides fundamentals for their applications in nanoelectronics.

英语

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PHYSICS

2-s2.0-85138237072

Scopus

1.Electron Microscopy Laboratory,International Center for Quantum Materials,School of Physics,Peking University,Beijing,100871,China
2.Department of Engineering Mechanics,Zhejiang University,Hangzhou,Zhejiang,310027,China
3.School of Materials Science and Engineering,Xiangtan University,Xiangtan,Hunan,411105,China
4.Hunan Provincial Key Laboratory of Intelligent Sensors and Advanced Sensor Materials,School of Physics and Electronics,Hunan University of Science and Technology,Xiangtan,Hunan,411201,China
5.Beijing National Laboratory for Condensed Matter Physics,Institute of Physics,Chinese Academy of Sciences,Beijing,100190,China
6.Guangdong Provincial Key Laboratory of Functional Oxide Materials and Devices,Southern University of Science and Technology,Shenzhen,Guangdong,518055,China
7.Department of Materials Science and Engineering,Southern University of Science and Technology,Shenzhen,Guangdong,518055,China
8.Zhejiang Laboratory,Hangzhou,Zhejiang,311100,China
9.State Key Laboratory for Artificial Microstructure & Mesoscopic Physics,School of Physics,Peking University,Beijing,100871,China
10.Interdisciplinary Institute of Light-Element Quantum Materials,Research Center for Light-Element Advanced Materials,Peking University,Beijing,100871,China
11.School of Physical Sciences,University of Chinese Academy of Sciences,Beijing,100049,China

Zhu，Ruixue,Jiang，Zhexin,Zhang，Xinxin,et al. Dynamics of Polar Skyrmion Bubbles under Electric Fields[J]. PHYSICAL REVIEW LETTERS,2022,129(10).

Zhu，Ruixue.,Jiang，Zhexin.,Zhang，Xinxin.,Zhong，Xiangli.,Tan，Congbing.,...&Bai，Xuedong.(2022).Dynamics of Polar Skyrmion Bubbles under Electric Fields.PHYSICAL REVIEW LETTERS,129(10).

Zhu，Ruixue,et al."Dynamics of Polar Skyrmion Bubbles under Electric Fields".PHYSICAL REVIEW LETTERS 129.10(2022).