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Title: Generation of high-density biskyrmions by electric current

Journal Article · · npj Quantum Materials
 [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

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.

Research Organization:
Ames Lab., Ames, IA (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
Grant/Contract Number:
AC02-07CH11358
OSTI ID:
1394805
Report Number(s):
IS-J-9431; PII: 34
Journal Information:
npj Quantum Materials, Vol. 2, Issue 1; ISSN 2397-4648
Publisher:
Nature Publishing GroupCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 28 works
Citation information provided by
Web of Science

References (25)

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Biskyrmion states and their current-driven motion in a layered manganite journal January 2014

Cited By (10)

Do Images of Biskyrmions Show Type‐II Bubbles? journal February 2019
Oriented 3D Magnetic Biskyrmions in MnNiGa Bulk Crystals journal March 2019
Direct observation of the topological spin configurations mediated by the substitution of rare-earth element Y in MnNiGa alloy journal January 2018
Realization of zero-field skyrmions with high-density via electromagnetic manipulation in Pt/Co/Ta multilayers journal November 2017
Low-field formation of room-temperature biskyrmions in centrosymmetric MnPdGa magnet journal April 2019
Abnormal dependence of multiferroicity on high-temperature electro-poling in GdMn 2 O 5 journal November 2019
Multiple tuning of magnetic biskyrmions using in situ L-TEM in centrosymmetric MnNiGa alloy journal January 2018
Magnetic field gradient driven dynamics of isolated skyrmions and antiskyrmions in frustrated magnets journal May 2018
Do Images of Biskyrmions Show Type-II Bubbles? text January 2019
Magnetic field gradient driven dynamics of isolated skyrmions and antiskyrmions in frustrated magnets text January 2017

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