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  Increasing skyrmion stability in Cu2OSeO3 by chemical substitution

Sukhanov, A. S., Vir, P., Cameron, A. S., Wu, H. C., Martin, N., Muehlbauer, S., et al. (2019). Increasing skyrmion stability in Cu2OSeO3 by chemical substitution. Physical Review B, 100(18): 184408, pp. 1-9. doi:10.1103/PhysRevB.100.184408.

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Item Permalink: http://hdl.handle.net/21.11116/0000-0005-4D6E-B Version Permalink: http://hdl.handle.net/21.11116/0000-0005-5D45-6
Genre: Journal Article

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 Creators:
Sukhanov, A. S.1, Author              
Vir, Praveen1, Author              
Cameron, A. S.2, Author
Wu, H. C.2, Author
Martin, N.2, Author
Muehlbauer, S.2, Author
Heinemann, A.2, Author
Yang, H. D.2, Author
Felser, C.3, Author              
Inosov, D. S.2, Author
Affiliations:
1Inorganic Chemistry, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863425              
2External Organizations, ou_persistent22              
3Claudia Felser, Inorganic Chemistry, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863429              

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 Abstract: The cubic chiral helimagnets with the P2(1)3 space group represent a group of compounds in which the stable skyrmion-lattice state is experimentally observed. The key parameter that controls the energy landscape of such systems and determines the emergence of a topologically nontrivial magnetic structure is the Dzyaloshinskii-Moriya interaction (DMI). Chemical substitution is recognized as a convenient instrument to tune the DMI in real materials and has been successfully utilized in studies of a number of chiral magnets, such as MnSi, FeGe, MnGe, and others. In our study, we applied small-angle neutron scattering to investigate how chemical substitution influences the skyrmionic properties of an insulating helimagnet Cu2OSeO3 when Cu ions are replaced by either Zn or Ni. Our results demonstrate that the DMI is enhanced in the Ni-substituted compounds (Cu,Ni)(2)OSeO3, but weakened in (Cu,Zn)(2)OSeO3. The observed changes in the DMI strength are reflected in the magnitude of the spin-spiral propagation vector and the temperature stability of the skyrmion phase.

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Language(s): eng - English
 Dates: 2019-11-072019-11-07
 Publication Status: Published in print
 Pages: -
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 Table of Contents: -
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Title: Physical Review B
  Abbreviation : Phys. Rev. B
Source Genre: Journal
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Publ. Info: Woodbury, NY : American Physical Society
Pages: - Volume / Issue: 100 (18) Sequence Number: 184408 Start / End Page: 1 - 9 Identifier: ISSN: 1098-0121
CoNE: https://pure.mpg.de/cone/journals/resource/954925225008