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

Abstract

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.

Authors:
 [1];  [1];  [1];  [2];  [1];  [3]
  1. Northeastern Univ., Shenyang (China). College of Sciences
  2. Chinese Academy of Sciences (CAS), Hefei (China). High Magnetic Field Lab.; Nanjing Univ. (China). Collaborative Innovation Center of Advanced Microstructures
  3. Univ. of New Hampshire, Durham, NH (United States). Dept. of Physics. Materials Science Program
Publication Date:
Research Org.:
Univ. of New Hampshire, Durham, NH (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
OSTI Identifier:
1535887
Alternate Identifier(s):
OSTI ID: 1353281
Grant/Contract Number:  
SC0016424
Resource Type:
Accepted Manuscript
Journal Name:
Physical Review. B
Additional Journal Information:
Journal Volume: 95; Journal Issue: 13; Journal ID: ISSN 2469-9950
Publisher:
American Physical Society (APS)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; micromagnetic modeling; skyrmions; micromagnetism

Citation Formats

Liu, Yan, Yan, Huan, Jia, Min, Du, Haifeng, Du, An, and Zang, Jiadong. Field-driven oscillation and rotation of a multiskyrmion cluster in a nanodisk. United States: N. p., 2017. Web. doi:10.1103/physrevb.95.134442.
Liu, Yan, Yan, Huan, Jia, Min, Du, Haifeng, Du, An, & Zang, Jiadong. Field-driven oscillation and rotation of a multiskyrmion cluster in a nanodisk. United States. https://doi.org/10.1103/physrevb.95.134442
Liu, Yan, Yan, Huan, Jia, Min, Du, Haifeng, Du, An, and Zang, Jiadong. Wed . "Field-driven oscillation and rotation of a multiskyrmion cluster in a nanodisk". United States. https://doi.org/10.1103/physrevb.95.134442. https://www.osti.gov/servlets/purl/1535887.
@article{osti_1535887,
title = {Field-driven oscillation and rotation of a multiskyrmion cluster in a nanodisk},
author = {Liu, Yan and Yan, Huan and Jia, Min and Du, Haifeng and Du, An and Zang, Jiadong},
abstractNote = {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.},
doi = {10.1103/physrevb.95.134442},
journal = {Physical Review. B},
number = 13,
volume = 95,
place = {United States},
year = {Wed Apr 26 00:00:00 EDT 2017},
month = {Wed Apr 26 00:00:00 EDT 2017}
}

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Cited by: 15 works
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