期刊
NATURE COMMUNICATIONS
卷 8, 期 -, 页码 -出版社
NATURE PUBLISHING GROUP
DOI: 10.1038/s41467-017-01785-w
关键词
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资金
- JSPS RONPAKU (Dissertation Ph.D.) Program
- President's Fund of CUHKSZ
- National Natural Science Foundation of China [11574137]
- Shenzhen Fundamental Research Fund [JCYJ20160331164412545, JCYJ20170410171958839]
- JSPS KAKENHI [25400317, JP17K05490, JP15H05854]
- CREST, JST [JPMJCR16F1]
- Grants-in-Aid for Scientific Research [17K05490, 17K19074, 15H05854] Funding Source: KAKEN
The helicity-orbital coupling is an intriguing feature of magnetic skyrmions in frustrated magnets. Here we explore the skyrmion dynamics in a frustrated magnet based on the J(1)-J(2)-J(3) classical Heisenberg model explicitly by including the dipole-dipole interaction. The skyrmion energy acquires a helicity dependence due to the dipole-dipole interaction, resulting in the current-induced translational motion with a fixed helicity. The lowest-energy states are the degenerate Bloch-type states, which can be used for building the binary memory. By increasing the driving current, the helicity locking-unlocking transition occurs, where the translational motion changes to the rotational motion. Furthermore, we demonstrate that two skyrmions can spontaneously form a bound state. The separation of the bound state forced by a driving current is also studied. In addition, we show the annihilation of a pair of skyrmion and antiskyrmion. Our results reveal the distinctive frustrated skyrmions may enable viable applications in topological magnetism.
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