2022
DOI: 10.1103/physrevb.105.014423
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Spin order and fluctuations in the EuAl4 and EuGa4 topological antiferromagnets: A μSR study

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Cited by 38 publications
(7 citation statements)
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“…The result clearly shows that the fourfold anisotropy is stronger for larger H. Thus, the shape of each skyrmion in real space looks like a square (rectangular) in the high(low)-field region. Finally, let us compare the present result with the experimental phase diagram in EuAl 4 [49][50][51][52][53], where the recent experiment suggested the importance of a spin-lattice coupling through a tetragonal-to-orthorhombic structural distortion [54,55]. Our present results indicate that the orthorhombic distortion, which makes the [100] and [010] directions inequivalent, gives a qualitatively similar result without distortion.…”
Section: Resultssupporting
confidence: 70%
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“…The result clearly shows that the fourfold anisotropy is stronger for larger H. Thus, the shape of each skyrmion in real space looks like a square (rectangular) in the high(low)-field region. Finally, let us compare the present result with the experimental phase diagram in EuAl 4 [49][50][51][52][53], where the recent experiment suggested the importance of a spin-lattice coupling through a tetragonal-to-orthorhombic structural distortion [54,55]. Our present results indicate that the orthorhombic distortion, which makes the [100] and [010] directions inequivalent, gives a qualitatively similar result without distortion.…”
Section: Resultssupporting
confidence: 70%
“…Meanwhile, it was revealed that SkXs remain stable in the low-symmetric lattice structures [42][43][44][45][46][47] and nonsymmorphic lattice structures with the screw axis [48]. In addition, a recent experiment has shown that a rhombic SkX was observed in the centrosymmetric tetragonal magnet EuAl 4 [49][50][51][52][53], where the importance of a spin-lattice coupling through a tetragonal-to-orthorhombic structural distortion was indicated in realizing such a low-symmetric SkX [54,55]. Based on this observation, it is important to clarify the stability of the SkX in the low-symmetric lattice structures without a threefold or fourfold rotational axis.…”
Section: Introductionmentioning
confidence: 99%
“…Recently, a symmetry-protected non-trivial topology of the electronic band structure was proposed for BaAl 4 (Wang et al, 2021). In case of magnetic EuAl 4 , a chiral spin structure, like skyrmions reported in some divalent Eu compounds such as EuPtSi (Kaneko et al, 2019;Ōnuki et al, 2020), was proposed on the basis of the observation of the topological Hall resistivity and muon-spin rotation and relaxation (µSR) studies (Shang et al, 2021;Zhu et al, 2022). If such a nontrivial texture would be confirmed, EuAl 4 would represent a rare case of a compound where one could observe the coexistence of exotic magnetic order and a CDW.…”
Section: Introductionmentioning
confidence: 99%
“…Recently, a symmetry-protected nontrivial topology of the electronic band structure was proposed for BaAl 4 (Wang et al, 2021). In the case of magnetic EuAl 4 , a chiral spin structure, like skyrmions reported in some divalent Eu compounds, such as EuPtSi (Kaneko et al, 2019;O " nuki et al, 2020), was proposed on the basis of the observation of the topological Hall resistivity and muon-spin rotation and relaxation (SR) studies (Shang et al, 2021;Zhu et al, 2022). If such a nontrivial texture was confirmed, EuAl 4 would represent a rare case of a compound where one could observe the co-existence of exotic magnetic order and a CDW.…”
Section: Introductionmentioning
confidence: 99%