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Direct Imaging of a Zero-Field Target Skyrmion and Its Polarity Switch in a Chiral Magnetic Nanodisk.
- Source :
-
Physical Review Letters . 11/10/2017, Vol. 119 Issue 19, p1-1. 1p. - Publication Year :
- 2017
-
Abstract
- 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. [ABSTRACT FROM AUTHOR]
- Subjects :
- *MAGNETS
*SKYRMIONS
*ROTATIONAL motion
Subjects
Details
- Language :
- English
- ISSN :
- 00319007
- Volume :
- 119
- Issue :
- 19
- Database :
- Academic Search Index
- Journal :
- Physical Review Letters
- Publication Type :
- Academic Journal
- Accession number :
- 126265048
- Full Text :
- https://doi.org/10.1103/PhysRevLett.119.197205