Field-driven oscillation and rotation of a multiskyrmion cluster in a nanodisk

Liu, Yan; Yan, Huan; Jia, Min; Du, Haifeng; Du, An; Zang, Jiadong

doi:10.1103/physrevb.95.134442

Title: Field-driven oscillation and rotation of a multiskyrmion cluster in a nanodisk

Journal Article · Wed Apr 26 00:00:00 UTC 2017 · Physical Review. B

DOI: https://doi.org/10.1103/physrevb.95.134442 · OSTI ID:1535887

Liu, Yan ^[1]; Yan, Huan ^[2]; Jia, Min ^[2]; Du, Haifeng ^[3]; Du, An ^[2]; Zang, Jiadong ^[4]

Northeastern Univ., Shenyang (China). College of Sciences; DOE/OSTI
Northeastern Univ., Shenyang (China). College of Sciences
Chinese Academy of Sciences (CAS), Hefei (China). High Magnetic Field Lab.; Nanjing Univ. (China). Collaborative Innovation Center of Advanced Microstructures
Univ. of New Hampshire, Durham, NH (United States). Dept. of Physics. Materials Science Program

The field-driven magnetization dynamics of a multiskyrmion cluster in a nanodisk is investigated by micromagnetic simulation and analytical calculation. Under a weak in-plane static magnetic field, the multiskyrmion cluster shows an oscillatory motion around an equilibrium position, which resembles the dynamical behavior of the conventional torsional pendulum. We show that this oscillation is induced by restoring torque acting on the skyrmion generated by the potential energy determined by the angle of the skyrmion orientation. Moreover, the multiskyrmion cluster can be driven to rotate by an in-plane rotating magnetic field. The rotation directions and frequencies are fully determined by the number of the skyrmions.

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Research Organization:: Univ. of New Hampshire, Durham, NH (United States)

Sponsoring Organization:: USDOE Office of Science (SC), Basic Energy Sciences (BES)

Grant/Contract Number:: SC0016424

OSTI ID:: 1535887

Journal Information:: Physical Review. B, Journal Name: Physical Review. B Journal Issue: 13 Vol. 95; ISSN 2469-9950

Publisher:: American Physical Society (APS)Copyright Statement

Country of Publication:: United States

Language:: English

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