Wiggling skyrmion propagation under parametric pumping

Yuan, H. Y.1; Wang, X. S.2,3; Yung, Man-Hong4,5,6; Wang, X. R.3,7

2019-01-23

10.1103/PhysRevB.99.014428

PHYSICAL REVIEW B   影响因子和分区

2469-9950

2469-9969

Magnetic skyrmion motion under parametric pumping is numerically investigated. Parametric pumping with a perpendicularly oscillating electric field can excite the breathing modes of a skyrmion because an electric field can modify the magnetic anisotropy. Interestingly, using an in-plane static magnetic field to break the rotational symmetry, a perpendicularly oscillating electric field can drive a skyrmion undergoing a wiggling motion along a well-defined trajectory. The skyrmion velocity can reach several meters per second when the frequency of the electric field is close to the frequency of the skyrmion breathing motion. The physics is revealed in a generalized Thiele equation where a net spin current excited by the parametric pumping can drive the skyrmion propagation through angular momentum transfer. Our results open new possibilities for manipulating skyrmions in both metals and insulators with low-power consumption. Moreover, the oscillating skyrmion can act as a microwave generator for future spintronic applications such as a nanotool on a diamond nitrogen-vacancy center.

SCI ; EI

英语

第一 ; 通讯

Hong Kong RGC[16300117] ; Hong Kong RGC[16301816]

Materials Science ; Physics

Materials Science, Multidisciplinary ; Physics, Applied ; Physics, Condensed Matter

WOS:000456481400003

AMER PHYSICAL SOC

20191906878841

Electric fields ; Magnetic anisotropy ; Magnetism

Pumps:618.2 ; Electricity: Basic Concepts and Phenomena:701.1 ; Magnetism: Basic Concepts and Phenomena:701.2

PHYSICS

Web of Science

1.Southern Univ Sci & Technol, Dept Phys, Shenzhen 518055, Guangdong, Peoples R China
2.Univ Elect Sci & Technol China, Sch Microelect & Solid State Elect, Chengdu 610054, Sichuan, Peoples R China
3.Hong Kong Univ Sci & Technol, Phys Dept, Kowloon, Clear Water Bay, Hong Kong, Peoples R China
4.South Univ Sci & Technol China, Inst Quantum Sci & Engn, Shenzhen 518055, Peoples R China
5.South Univ Sci & Technol China, Dept Phys, Shenzhen 518055, Peoples R China
6.Shenzhen Key Lab Quantum Sci & Engn, Shenzhen 518055, Peoples R China
7.HKUST Shenzhen Res Inst, Shenzhen 518057, Peoples R China

Yuan, H. Y.,Wang, X. S.,Yung, Man-Hong,et al. Wiggling skyrmion propagation under parametric pumping[J]. PHYSICAL REVIEW B,2019,99(1).

Yuan, H. Y.,Wang, X. S.,Yung, Man-Hong,&Wang, X. R..(2019).Wiggling skyrmion propagation under parametric pumping.PHYSICAL REVIEW B,99(1).

Yuan, H. Y.,et al."Wiggling skyrmion propagation under parametric pumping".PHYSICAL REVIEW B 99.1(2019).