Nuclear and magnetic spin structure of the antiferromagnetic triangular lattice compound LiCrTe2 investigated by $$\mu ^+$$ μ + SR, neutron and X-ray diffraction
Abstract Two-dimensional (2D) triangular lattice antiferromagnets (2D-TLA) often manifest intriguing physical and technological properties, due to the strong interplay between lattice geometry and electronic properties. The recently synthesized 2-dimensional transition metal dichalcogenide LiCrTe $$...
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Nature Portfolio
2022-12-01
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| Series: | Scientific Reports |
| Online Access: | https://doi.org/10.1038/s41598-022-25921-9 |
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| author | E. Nocerino C. Witteveen S. Kobayashi O. K. Forslund N. Matsubara A. Zubayer F. Mazza S. Kawaguchi A. Hoshikawa I. Umegaki J. Sugiyama K. Yoshimura Y. Sassa F. O. von Rohr M. Månsson |
| author_facet | E. Nocerino C. Witteveen S. Kobayashi O. K. Forslund N. Matsubara A. Zubayer F. Mazza S. Kawaguchi A. Hoshikawa I. Umegaki J. Sugiyama K. Yoshimura Y. Sassa F. O. von Rohr M. Månsson |
| author_sort | E. Nocerino |
| collection | DOAJ |
| description | Abstract Two-dimensional (2D) triangular lattice antiferromagnets (2D-TLA) often manifest intriguing physical and technological properties, due to the strong interplay between lattice geometry and electronic properties. The recently synthesized 2-dimensional transition metal dichalcogenide LiCrTe $$_2$$ 2 , being a 2D-TLA, enriched the range of materials which can present such properties. In this work, muon spin rotation ( $$\mu ^+$$ μ + SR) and neutron powder diffraction (NPD) have been utilized to reveal the true magnetic nature and ground state of LiCrTe $$_2$$ 2 . From high-resolution NPD the magnetic spin order at base-temperature is not, as previously suggested, helical, but rather collinear antiferromagnetic (AFM) with ferromagnetic (FM) spin coupling within the ab-plane and AFM coupling along the c-axis. The value if the ordered magnetic Cr moment is established as $$\mu _{\textrm{Cr}}= 2.36~\mu _{\textrm{B}}$$ μ Cr = 2.36 μ B . From detailed $$\mu ^+$$ μ + SR measurements we observe an AFM ordering temperature $$T_{\textrm{N}}\approx 125$$ T N ≈ 125 K. This value is remarkably higher than the one previously reported by magnetic bulk measurements. From $$\mu ^+$$ μ + SR we are able to extract the magnetic order parameter, whose critical exponent allows us to categorize LiCrTe $$_2$$ 2 in the 3D Heisenberg AFM universality class. Finally, by combining our magnetic studies with high-resolution synchrotron X-ray diffraction (XRD), we find a clear coupling between the nuclear and magnetic spin lattices. This suggests the possibility for a strong magnon–phonon coupling, similar to what has been previously observed in the closely related compound LiCrO $$_2$$ 2 . |
| first_indexed | 2024-04-11T05:51:24Z |
| format | Article |
| id | doaj.art-abff95fec6244c9087fdbc7a7856e420 |
| institution | Directory Open Access Journal |
| issn | 2045-2322 |
| language | English |
| last_indexed | 2024-04-11T05:51:24Z |
| publishDate | 2022-12-01 |
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| spelling | doaj.art-abff95fec6244c9087fdbc7a7856e4202022-12-22T04:42:03ZengNature PortfolioScientific Reports2045-23222022-12-0112111110.1038/s41598-022-25921-9Nuclear and magnetic spin structure of the antiferromagnetic triangular lattice compound LiCrTe2 investigated by $$\mu ^+$$ μ + SR, neutron and X-ray diffractionE. Nocerino0C. Witteveen1S. Kobayashi2O. K. Forslund3N. Matsubara4A. Zubayer5F. Mazza6S. Kawaguchi7A. Hoshikawa8I. Umegaki9J. Sugiyama10K. Yoshimura11Y. Sassa12F. O. von Rohr13M. Månsson14KTH Royal Institute of Technology, Department of Applied Physics, Alba Nova University CenterDepartment of Quantum Matter Physics, University of GenevaJapan Synchrotron Radiation Research Institute (JASRI)Department of Physics, Chalmers University of TechnologyKTH Royal Institute of Technology, Department of Applied Physics, Alba Nova University CenterDepartment of Physics, Chemistry and Biology (IFM), Linköping UniversityInsitute of Solid State Physics, TU WienJapan Synchrotron Radiation Research Institute (JASRI)Frontier Research Center for Applied Atomic Sciences, Ibaraki UniversityMuon Science Laboratory, Institute of Materials Structure Science, KEKNeutron Science and Technology Center, Comprehensive Research Organization for Science and Society (CROSS)Department of Chemistry, Graduate School of Science, Kyoto UniversityDepartment of Physics, Chalmers University of TechnologyDepartment of Quantum Matter Physics, University of GenevaKTH Royal Institute of Technology, Department of Applied Physics, Alba Nova University CenterAbstract Two-dimensional (2D) triangular lattice antiferromagnets (2D-TLA) often manifest intriguing physical and technological properties, due to the strong interplay between lattice geometry and electronic properties. The recently synthesized 2-dimensional transition metal dichalcogenide LiCrTe $$_2$$ 2 , being a 2D-TLA, enriched the range of materials which can present such properties. In this work, muon spin rotation ( $$\mu ^+$$ μ + SR) and neutron powder diffraction (NPD) have been utilized to reveal the true magnetic nature and ground state of LiCrTe $$_2$$ 2 . From high-resolution NPD the magnetic spin order at base-temperature is not, as previously suggested, helical, but rather collinear antiferromagnetic (AFM) with ferromagnetic (FM) spin coupling within the ab-plane and AFM coupling along the c-axis. The value if the ordered magnetic Cr moment is established as $$\mu _{\textrm{Cr}}= 2.36~\mu _{\textrm{B}}$$ μ Cr = 2.36 μ B . From detailed $$\mu ^+$$ μ + SR measurements we observe an AFM ordering temperature $$T_{\textrm{N}}\approx 125$$ T N ≈ 125 K. This value is remarkably higher than the one previously reported by magnetic bulk measurements. From $$\mu ^+$$ μ + SR we are able to extract the magnetic order parameter, whose critical exponent allows us to categorize LiCrTe $$_2$$ 2 in the 3D Heisenberg AFM universality class. Finally, by combining our magnetic studies with high-resolution synchrotron X-ray diffraction (XRD), we find a clear coupling between the nuclear and magnetic spin lattices. This suggests the possibility for a strong magnon–phonon coupling, similar to what has been previously observed in the closely related compound LiCrO $$_2$$ 2 .https://doi.org/10.1038/s41598-022-25921-9 |
| spellingShingle | E. Nocerino C. Witteveen S. Kobayashi O. K. Forslund N. Matsubara A. Zubayer F. Mazza S. Kawaguchi A. Hoshikawa I. Umegaki J. Sugiyama K. Yoshimura Y. Sassa F. O. von Rohr M. Månsson Nuclear and magnetic spin structure of the antiferromagnetic triangular lattice compound LiCrTe2 investigated by $$\mu ^+$$ μ + SR, neutron and X-ray diffraction Scientific Reports |
| title | Nuclear and magnetic spin structure of the antiferromagnetic triangular lattice compound LiCrTe2 investigated by $$\mu ^+$$ μ + SR, neutron and X-ray diffraction |
| title_full | Nuclear and magnetic spin structure of the antiferromagnetic triangular lattice compound LiCrTe2 investigated by $$\mu ^+$$ μ + SR, neutron and X-ray diffraction |
| title_fullStr | Nuclear and magnetic spin structure of the antiferromagnetic triangular lattice compound LiCrTe2 investigated by $$\mu ^+$$ μ + SR, neutron and X-ray diffraction |
| title_full_unstemmed | Nuclear and magnetic spin structure of the antiferromagnetic triangular lattice compound LiCrTe2 investigated by $$\mu ^+$$ μ + SR, neutron and X-ray diffraction |
| title_short | Nuclear and magnetic spin structure of the antiferromagnetic triangular lattice compound LiCrTe2 investigated by $$\mu ^+$$ μ + SR, neutron and X-ray diffraction |
| title_sort | nuclear and magnetic spin structure of the antiferromagnetic triangular lattice compound licrte2 investigated by mu μ sr neutron and x ray diffraction |
| url | https://doi.org/10.1038/s41598-022-25921-9 |
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