Proceedings of the International Conference on Strongly Correlated Electron Systems (SCES2019) 2020
DOI: 10.7566/jpscp.30.011008
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Unique Skyrmion Phases and Conduction Electrons in Cubic Chiral Antiferromagnet EuPtSi and Related Compounds

Abstract: EuPtSi crystallizes in the cubic chiral structure (P2 1 3, No.198), which is the same as the noncentrosymmetric space group of MnSi with the skyrmion structure. The first-order antiferromagnetic transition occurs at T N = 4.0 K, and EuPtSi is in the helical magnetic state with the propagation vector q = (0.2, 0.3, 0) at low temperatures. We found the skyrmion structure in a closed H-T phase or the so-called "A-phase" for H ∥ [111], together with a new skyrmion-related phase named the "Bphase" for H ∥ [001]. It… Show more

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Cited by 5 publications
(3 citation statements)
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“…Since this does not originate from the DM interaction, its formation mechanism has been intensively studied recently. In terms of the shortness of the modulation pitch, the skyrmion lattices observed in EuPtSi [33,34] and Mn 1−x Fe x Ge [35,36] might be classified into the same category as the centrosymmetric systems even though their crystal structures do not have the space inversion symmetry. Since a short-pitch skyrmion lattice is favorable for realizing high-density memory bits in a storage device, revealing the key quantity to determine the modulation pitch will promote further materials design and engineering of the skyrmion phase.…”
Section: Introductionmentioning
confidence: 99%
“…Since this does not originate from the DM interaction, its formation mechanism has been intensively studied recently. In terms of the shortness of the modulation pitch, the skyrmion lattices observed in EuPtSi [33,34] and Mn 1−x Fe x Ge [35,36] might be classified into the same category as the centrosymmetric systems even though their crystal structures do not have the space inversion symmetry. Since a short-pitch skyrmion lattice is favorable for realizing high-density memory bits in a storage device, revealing the key quantity to determine the modulation pitch will promote further materials design and engineering of the skyrmion phase.…”
Section: Introductionmentioning
confidence: 99%
“…In inorganic materials, the presence of a screw axis and the absence of any mirror plane are prerequisites as, for example, Te atoms having a spiral along the c axis. The inorganic chiral materials are the potential ones as they have found their applications in catalysis, ,, magnetic properties , such as observation of Skyrmion, topological semimetal, optoelectronics, metamaterials, and helicoid arc apart from the earlier mentioned ones. Synthesizing a chiral inorganic material is more challenging as compared to molecular crystals.…”
Section: Introductionmentioning
confidence: 99%
“…Topological phases have received growing interest in the community. Recently, rare earth-based intermetallic materials have revealed topological spin textures: Gd 2 PdSi 3 [3], Gd 3 Ru 4 Si 12 [9], GdRu 2 Si 2 [10], EuPtSi [11,12] and RMn 2 Ge 2 [13] are a few examples. Yin et al [4] reported the realization of a quantum-limit Chern phase in TbMn 6 Sn 6 .…”
mentioning
confidence: 99%