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  Room-temperature tetragonal non-collinear Heusler antiferromagnet Pt2MnGa

Singh, S., D'Souza, S. W., Nayak, J., Suard, E., Chapon, L., Senyshyn, A., et al. (2016). Room-temperature tetragonal non-collinear Heusler antiferromagnet Pt2MnGa. Nature Communications, 12671, pp. 1-6. doi:10.1038/ncomms12671.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-002B-5090-E Version Permalink: http://hdl.handle.net/11858/00-001M-0000-002E-2765-7
Genre: Journal Article

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 Creators:
Singh, S.1, Author              
D'Souza, S. W.1, Author              
Nayak, J.1, Author              
Suard, E.2, Author
Chapon, L.2, Author
Senyshyn, A.2, Author
Petricek, V.2, Author
Skourski, Y.2, Author
Nicklas, M.3, Author              
Felser, C.4, Author              
Chadov, S.5, Author              
Affiliations:
1Inorganic Chemistry, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863425              
2External Organizations, ou_persistent22              
3Michael Nicklas, Physics of Quantum Materials, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863472              
4Claudia Felser, Inorganic Chemistry, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863429              
5Stanislav Chadov, Inorganic Chemistry, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863440              

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 Abstract: Antiferromagnetic spintronics is a rapidly growing field, which actively introduces new principles of magnetic storage. Despite that, most applications have been suggested for collinear antiferromagnets. In this study, we consider an alternative mechanism based on long-range helical order, which allows for direct manipulation of the helicity vector. As the helicity of long-range homogeneous spirals is typically fixed by the Dzyaloshinskii-Moriya interactions, bi-stable spirals (left- and right-handed) are rare. Here, we report a non-collinear room-temperature antiferromagnet in the tetragonal Heusler group. Neutron diffraction reveals a long-period helix propagating along its tetragonal axis. Ab-initio analysis suggests its pure exchange origin and explains its helical character resulting from a large basal plane magnetocrystalline anisotropy. The actual energy barrier between the left- and right-handed spirals is relatively small and might be easily overcome by magnetic pulse, suggesting Pt2MnGa as a potential candidate for non-volatile magnetic memory.

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Language(s): eng - English
 Dates: 2016-08-262016-08-26
 Publication Status: Published in print
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Method: -
 Identifiers: DOI: 10.1038/ncomms12671
 Degree: -

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Title: Nature Communications
  Abbreviation : Nat. Commun.
Source Genre: Journal
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Publ. Info: London : Nature Publishing Group
Pages: - Volume / Issue: - Sequence Number: 12671 Start / End Page: 1 - 6 Identifier: ISSN: 2041-1723
CoNE: /journals/resource/2041-1723