TbPt6Al3: A rare-earth-based g-wave altermagnet with a honeycomb structure
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arXiv
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| Autori principali: | , , , , , , , , |
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| Natura: | Preprint |
| Pubblicazione: |
2025
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| _version_ | 1866918139792457728 |
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| author | Oishi, R. Taniguchi, T. Adroja, D. T. Le, M. D. Aouane, M. Onimaru, T. Umeo, K. Ishii, I. Takabatake, T. |
| author_facet | Oishi, R. Taniguchi, T. Adroja, D. T. Le, M. D. Aouane, M. Onimaru, T. Umeo, K. Ishii, I. Takabatake, T. |
| contents | The magnetic properties of the Tb-honeycomb lattice compound TbPt6Al3, which crystallizes in the NdPt6Al3-type trigonal structure, have been studied by the measurements of electrical resistivity, magnetization M(T, B), and specific heat on single-crystalline samples. The magnetic susceptibility, M(T)/B, for B || c = 0.1 T shows a cusp at TN = 3.5 K, which temperature decreases with increasing the magnitude of B || c, while M(T)/B for B || a = 0.1 T remains constant with decreasing temperature below TN. This anisotropic behavior suggests a collinear antiferromagnetic (AFM) order of the Tb3+ moments pointing along the c axis. The data of M(T)/B for T > 10 K on the single crystal and that of inelastic neutron scattering from powdered samples have been simultaneously analyzed using the crystal field model. The analysis reveals the non-Kramers doublet ground state for the Tb3+ ion under the trigonal crystal field. The neutron powder diffraction measurement shows that the collinear AFM structure with a magnetic propagation vector k = [0, 0, 0] is associated with moments of 5.1 μB/Tb pointing along the c axis. Comparison of the magnetic point group with the nontrivial spin Laue group indicates that TbPt6Al3 is classified into bulk g-wave altermagnets. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2509_09909 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | TbPt6Al3: A rare-earth-based g-wave altermagnet with a honeycomb structure Oishi, R. Taniguchi, T. Adroja, D. T. Le, M. D. Aouane, M. Onimaru, T. Umeo, K. Ishii, I. Takabatake, T. Strongly Correlated Electrons The magnetic properties of the Tb-honeycomb lattice compound TbPt6Al3, which crystallizes in the NdPt6Al3-type trigonal structure, have been studied by the measurements of electrical resistivity, magnetization M(T, B), and specific heat on single-crystalline samples. The magnetic susceptibility, M(T)/B, for B || c = 0.1 T shows a cusp at TN = 3.5 K, which temperature decreases with increasing the magnitude of B || c, while M(T)/B for B || a = 0.1 T remains constant with decreasing temperature below TN. This anisotropic behavior suggests a collinear antiferromagnetic (AFM) order of the Tb3+ moments pointing along the c axis. The data of M(T)/B for T > 10 K on the single crystal and that of inelastic neutron scattering from powdered samples have been simultaneously analyzed using the crystal field model. The analysis reveals the non-Kramers doublet ground state for the Tb3+ ion under the trigonal crystal field. The neutron powder diffraction measurement shows that the collinear AFM structure with a magnetic propagation vector k = [0, 0, 0] is associated with moments of 5.1 μB/Tb pointing along the c axis. Comparison of the magnetic point group with the nontrivial spin Laue group indicates that TbPt6Al3 is classified into bulk g-wave altermagnets. |
| title | TbPt6Al3: A rare-earth-based g-wave altermagnet with a honeycomb structure |
| topic | Strongly Correlated Electrons |
| url | https://arxiv.org/abs/2509.09909 |