Direct Imaging of a Zero-Field Target Skyrmion and Its Polarity Switch in a Chiral Magnetic Nanodisk.

Zheng, Fengshan; Li, Hang; Wang, Shasha; Song, Dongsheng; Jin, Chiming; Wei, Wenshen; Kovács, András; Zang, Jiadong; Tian, Mingliang; Zhang, Yuheng; Du, Haifeng; Dunin-Borkowski, Rafal E

Zheng, Fengshan; Li, Hang; Wang, Shasha; Song, Dongsheng; Jin, Chiming; Wei, Wenshen; Kovács, András; Zang, Jiadong; Tian, Mingliang; Zhang, Yuheng; Du, Haifeng; Dunin-Borkowski, Rafal E.

Afiliación

Zheng F; Ernst Ruska-Centre for Microscopy and Spectroscopy with Electrons and Peter Grünberg Institute, Forschungszentrum Jülich, 52425 Jülich, Germany.
Li H; Department of Physics, University of New Hampshire, Durham, New Hampshire 03824, USA.
Wang S; The Anhui Key Laboratory of Condensed Matter Physics at Extreme Conditions, High Magnetic Field Laboratory, Chinese Academy of Sciences and University of Science and Technology of China, Hefei 230026, China.
Song D; Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Jiangsu Province 210093, China.
Jin C; National Center for Electron Microscopy in Beijing, Key Laboratory of Advanced Materials (MOE) and the State Key Laboratory of New Ceramics and Fine Processing, School of Materials Science and Engineering, Tsinghua University, Beijing 100084, China.
Wei W; The Anhui Key Laboratory of Condensed Matter Physics at Extreme Conditions, High Magnetic Field Laboratory, Chinese Academy of Sciences and University of Science and Technology of China, Hefei 230026, China.
Kovács A; Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Jiangsu Province 210093, China.
Zang J; The Anhui Key Laboratory of Condensed Matter Physics at Extreme Conditions, High Magnetic Field Laboratory, Chinese Academy of Sciences and University of Science and Technology of China, Hefei 230026, China.
Tian M; Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Jiangsu Province 210093, China.
Zhang Y; Ernst Ruska-Centre for Microscopy and Spectroscopy with Electrons and Peter Grünberg Institute, Forschungszentrum Jülich, 52425 Jülich, Germany.
Du H; Department of Physics, University of New Hampshire, Durham, New Hampshire 03824, USA.
Dunin-Borkowski RE; The Anhui Key Laboratory of Condensed Matter Physics at Extreme Conditions, High Magnetic Field Laboratory, Chinese Academy of Sciences and University of Science and Technology of China, Hefei 230026, China.

Phys Rev Lett ; 119(19): 197205, 2017 Nov 10.

Article en En | MEDLINE | ID: mdl-29219505

RESUMEN

A target Skyrmion is a flux-closed spin texture that has twofold degeneracy and is promising as a binary state in next generation universal memories. Although its formation in nanopatterned chiral magnets has been predicted, its observation has remained challenging. Here, we use off-axis electron holography to record images of target Skyrmions in a 160-nm-diameter nanodisk of the chiral magnet FeGe. We compare experimental measurements with numerical simulations, demonstrate switching between two stable degenerate target Skyrmion ground states that have opposite polarities and rotation senses, and discuss the observed switching mechanism.

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Texto completo: 1 Colección: 01-internacional Banco de datos: MEDLINE Idioma: En Revista: Phys Rev Lett Año: 2017 Tipo del documento: Article País de afiliación: Alemania

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