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Title: Generation of high-density biskyrmions by electric current

Much interest has been focused on the manipulation of magnetic skyrmions, including the generation, annihilation, and motion behaviors, for potential applications in spintronics. We experimentally demonstrate that a high-density Bloch-type biskyrmion lattice in MnNiGa can be generated by applying electric current. It is revealed that the density of biskyrmions can be remarkably increased by increasing the electric current, in contrast to the scattered biskyrmions induced by a magnetic field alone. Furthermore, the transition from the ferromagnetic state to the stripe domain structure can be terminated by the electric current, leading to the biskyrmions dominated residual domain pattern. These biskyrmions in such residual domain structure are extremely stable at zero magnetic and electric fields and can further evolve into the high-density biskyrmion lattice over a temperature range from 100 to 330 K. Finally, our experimental findings open up a new pathway for the generation of skyrmion lattice by electric current manipulation.
 [1] ;  [2] ;  [1] ;  [1] ;  [2] ;  [2] ;  [1] ;  [3] ;  [1] ;  [2] ;  [4] ;  [5] ;  [1]
  1. Chinese Academy of Sciences (CAS), Beijing (China). Beijing National Lab. for Condensed Matter Physics, Inst. of Physics; Univ. of Chinese Academy of Sciences, Beijing (China). School of Physical Sciences
  2. Chinese Academy of Sciences (CAS), Beijing (China). Beijing National Lab. for Condensed Matter Physics, Inst. of Physics
  3. Univ. of Science and Technology, Beijing (China). School of Materials Science and Engineering
  4. Univ. of Texas, Arlington, TX (United States). Dept. of Physics
  5. Ames Lab., Ames, IA (United States). Materials Sciences and Engineering
Publication Date:
Report Number(s):
Journal ID: ISSN 2397-4648; PII: 34
Grant/Contract Number:
Accepted Manuscript
Journal Name:
npj Quantum Materials
Additional Journal Information:
Journal Volume: 2; Journal Issue: 1; Journal ID: ISSN 2397-4648
Nature Publishing Group
Research Org:
Ames Laboratory (AMES), Ames, IA (United States)
Sponsoring Org:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
Country of Publication:
United States
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; magnetic devices; magnetic properties and materials
OSTI Identifier: