TY - JOUR
T1 - Creation of nanometric magnetic skyrmions by global application of circularly polarized microwave magnetic field
AU - Miyake, Masayuki
AU - Mochizuki, Masahito
N1 - Funding Information:
This work was supported by JSPS KAKENHI (Grants No. 17H02924, No. 16H06345, No. 19H00864, and No. 19K21858), Waseda University Grant for Special Research Projects (Project No. 2018K-257 and No. 2019C-253), and JST PRESTO (Grant No. JPMJPR132A).
Publisher Copyright:
© 2020 American Physical Society.
PY - 2020/3/1
Y1 - 2020/3/1
N2 - From a theoretical perspective, we demonstrate that nanometric magnetic skyrmions are created by application of a circularly polarized microwave magnetic field to a thin-plate Dzyaloshinskii-Moriya ferromagnet with fabricated rectangular holes. This phenomenon is caused by an effective steady magnetic field perpendicular to the microwave-polarization plane induced by the rotating magnetic field and the intense interference of spin waves excited by this magnetic field due to the hole structure, which causes reversals of local magnetizations and results in the formation of skyrmions. Our proposal provides an option to write or create magnetic textures the sizes of which are much smaller than the spot size of the external stimulus such as magnetic field, light, and microwave.
AB - From a theoretical perspective, we demonstrate that nanometric magnetic skyrmions are created by application of a circularly polarized microwave magnetic field to a thin-plate Dzyaloshinskii-Moriya ferromagnet with fabricated rectangular holes. This phenomenon is caused by an effective steady magnetic field perpendicular to the microwave-polarization plane induced by the rotating magnetic field and the intense interference of spin waves excited by this magnetic field due to the hole structure, which causes reversals of local magnetizations and results in the formation of skyrmions. Our proposal provides an option to write or create magnetic textures the sizes of which are much smaller than the spot size of the external stimulus such as magnetic field, light, and microwave.
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U2 - 10.1103/PhysRevB.101.094419
DO - 10.1103/PhysRevB.101.094419
M3 - Article
AN - SCOPUS:85083240137
VL - 101
JO - Physical Review B-Condensed Matter
JF - Physical Review B-Condensed Matter
SN - 2469-9950
IS - 9
M1 - 094419
ER -