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  Microscopic nature of drastic influence of hydrogen on the magnetic anisotropy of 5f-electron systems: The case of U2Ni2Sn

Sandratskii, L. M., & Havela, L. (2020). Microscopic nature of drastic influence of hydrogen on the magnetic anisotropy of 5f-electron systems: The case of U2Ni2Sn. Physical Review B, 101(10): 100409. doi:10.1103/PhysRevB.101.100409.

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Item Permalink: https://hdl.handle.net/21.11116/0000-0008-835C-D Version Permalink: https://hdl.handle.net/21.11116/0000-0009-4FB5-3
Genre: Journal Article

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PhysRevB.101.100409.pdf (Publisher version), 278KB
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https://doi.org/10.1103/PhysRevB.101.100409 (Publisher version)
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Sandratskii, L. M.1, Author
Havela, L.2, Author
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1Max Planck Institute of Microstructure Physics, Max Planck Society, Weinberg 2, 06120 Halle, DE, ou_2415691              
2External Organizations, ou_persistent22              

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 Abstract: Recent experiments showed that hydrogenation of U2Ni2Sn leads to a dramatic change of the magnetic anisotropy (MA) from strongly uniaxial type to easy-plane type with easy axis and easy plane orthogonal to each other. We applied first-principles calculations aiming to understand the microscopic origin of the drastic MA change and distinguish between discontinuous and continuous scenarios of the transformation. The calculations combined with symmetry analysis revealed that the hydrogenation leads to the instability of both uniaxial and easy-plane states caused by the reduced symmetry of the atomic lattice. The obtained noncollinear noncoplanar magnetic states have the features of both apparently competing magnetic structures, which indicates the validity of the continuous scenario of the transformation. An insight into the active interatomic interactions shows that Dzyaloshinskii-Moriya interaction contributes to magnetic transformations and must be taken into account on the same footing as MA.

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 Dates: 2020-03-24
 Publication Status: Issued
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 Identifiers: BibTex Citekey: P13897
DOI: 10.1103/PhysRevB.101.100409
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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: 101 (10) Sequence Number: 100409 Start / End Page: - Identifier: ISSN: 1098-0121
CoNE: https://pure.mpg.de/cone/journals/resource/954925225008