TY  - JOUR
AU  - Zheng, Fengshan
AU  - Li, Hang
AU  - Wang, Shasha
AU  - Song, Dongsheng
AU  - Jin, Chiming
AU  - Wei, Wenshen
AU  - Kovács, András
AU  - Zang, Jiadong
AU  - Tian, Mingliang
AU  - Zhang, Yuheng
AU  - Du, Haifeng
AU  - Dunin-Borkowski, Rafal
TI  - Direct Imaging of a Zero-Field Target Skyrmion and Its Polarity Switch in a Chiral Magnetic Nanodisk
JO  - Physical review letters
VL  - 119
IS  - 19
SN  - 1079-7114
CY  - College Park, Md.
PB  - APS
M1  - FZJ-2017-07467
SP  - 197205
PY  - 2017
AB  - 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.
LB  - PUB:(DE-HGF)16
C6  - pmid:29219505
UR  - <Go to ISI:>//WOS:000414853700002
DO  - DOI:10.1103/PhysRevLett.119.197205
UR  - https://juser.fz-juelich.de/record/839889
ER  -