TY - JOUR
T1 - Stabilization of Skyrmions in a Nanodisk Without an External Magnetic Field
AU - Li, Hang
AU - Akosa, Collins Ashu
AU - Yan, Peng
AU - Wang, Yuanxu
AU - Cheng, Zhenxiang
N1 - Funding Information:
H.L. acknowledges support from HeNan University (Grant No. CJ3050A0240050) and the National Natural Science Foundation of China (Grant No. 11804078). C.A.A. acknowledges financial support from the Grant-in-Aid for Exploratory Research (Grant No. 16K13853), from the Grant-in-Aid for Scientific Research (B) (Grant No. 17H02929), and from the Japan Society for the Promotion of Science (JSPS). P.Y. acknowledges support from the National Natural Science Foundation of China (Grant No. 11604041), the National Key Research Development Program (under Contract No. 2016YFA0300801), and the National Thousand-Young-Talents Program of China. Y.X.W. acknowledges support from the National Natural Science Foundation of China (Grant No. 11674083). Z.X.C. appreciates the support from the Australian Research Council (Grant No. DP190100150).
Publisher Copyright:
© 2020 American Physical Society.
PY - 2020/2
Y1 - 2020/2
N2 - We study, in the absence of a magnetic field, the stability of skyrmions in a disk-shaped ferromagnetic multilayer in the presence of locally pinned spins at the edge. This particular boundary condition suppresses the formation of helical states yet enhances the stabilization of states with rotational symmetry, such as Neél skyrmions. Numerical simulation shows that the size of the disk is a viable parameter to control the creation and annihilation of skyrmionic states. We also find that the demagnetization field renormalizes the Dzyaloshinskii-Moriya interaction. This study opens an alternative avenue to the generation, stabilization, and control of magnetic skyrmions in field-free heterostructures.
AB - We study, in the absence of a magnetic field, the stability of skyrmions in a disk-shaped ferromagnetic multilayer in the presence of locally pinned spins at the edge. This particular boundary condition suppresses the formation of helical states yet enhances the stabilization of states with rotational symmetry, such as Neél skyrmions. Numerical simulation shows that the size of the disk is a viable parameter to control the creation and annihilation of skyrmionic states. We also find that the demagnetization field renormalizes the Dzyaloshinskii-Moriya interaction. This study opens an alternative avenue to the generation, stabilization, and control of magnetic skyrmions in field-free heterostructures.
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U2 - 10.1103/PhysRevApplied.13.034046
DO - 10.1103/PhysRevApplied.13.034046
M3 - Article
AN - SCOPUS:85082865348
VL - 13
JO - Physical Review Applied
JF - Physical Review Applied
SN - 2331-7019
IS - 3
M1 - 034046
ER -