Real-space and reciprocal-space topology in the Eu(Ga1-xAlx)4 square net system
文献类型：期刊论文
| 作者 | Moya, Jaime M.1,2,4; Huang, Jianwei1,4; Lei, Shiming1,4; Allen, Kevin1,4; Gao, Yuxiang1,4; Sun, Yan3; Yi, Ming1,4; Morosan, E.1,4 |
| 刊名 | PHYSICAL REVIEW B
 |
| 出版日期 | 2023-08-31 |
| 卷号 | 108期号:6页码:10 |
| ISSN号 | 2469-9950 |
| DOI | 10.1103/PhysRevB.108.064436 |
| 通讯作者 | Morosan, E.(em11@rice.edu) |
| 英文摘要 | Magnetotransport measurements of the centrosymmetric square net Eu(Ga1-xAlx)4 compounds reveal evidence of both reciprocal- and real-space topology. For compositions 0.50 x 0.90, several intermediate field phases are found by magnetization measurements when H II c, where a maximum in the topological Hall effect is observed, pointing to the existence of topological (real-space topology) or noncoplanar spin textures. For 0.25 x 0.39, magnetization measurements reveal an intermediate field state, but no transition is visible in the Hall measurements. For x = 0.15, only one magnetic transition occurs below the Neel temperature TN, and no intermediate field spin reorientations are observed. The Hall effect varies smoothly before the spin-polarized (SP) state. However, in the SP state, Hall measurements reveal a large anomalous Hall effect (AHE) for all compositions, a consequence of reciprocal-space topology. Density functional theory calculations in the paramagnetic state indeed reveal a Dirac point that lies very near the Fermi energy, which is expected to split into Weyl nodes in the SP state, thereby explaining the observed AHE. These results suggest the Eu(Ga1-xAlx)4 family is a rare material platform where real- and reciprocal-space topology exist in a single material platform. |
| 资助项目 | AFOSR[FA9550-21-1-0343] ; NSF Graduate Research Fellowship Program[DGE-1842494] ; National Science Foundation (NSF) DMR[1903741] ; Robert A. Welch Foundation[C-2175] ; Gordon and Betty Moore Foundation's EPiQS Initiative[GBMF9470] |
| WOS研究方向 | Materials Science ; Physics |
| 语种 | 英语 |
| WOS记录号 | WOS:001078582800003 |
| 出版者 | AMER PHYSICAL SOC |
| 资助机构 | AFOSR ; NSF Graduate Research Fellowship Program ; National Science Foundation (NSF) DMR ; Robert A. Welch Foundation ; Gordon and Betty Moore Foundation's EPiQS Initiative |
| 源URL | [http://ir.imr.ac.cn/handle/321006/179485]  |
| 专题 | 金属研究所_中国科学院金属研究所 |
| 通讯作者 | Morosan, E. |
| 作者单位 | 1.Rice Univ, Rice Ctr Quantum Mat RCQM, Houston, TX 77005 USA 2.Rice Univ, Appl Phys Grad Program, Houston, TX 77005 USA 3.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Liaoning, Peoples R China 4.Rice Univ, Dept Phys & Astron, Houston, TX 77005 USA |
| 推荐引用方式 GB/T 7714 | Moya, Jaime M.,Huang, Jianwei,Lei, Shiming,et al. Real-space and reciprocal-space topology in the Eu(Ga1-xAlx)4 square net system[J]. PHYSICAL REVIEW B,2023,108(6):10. |
| APA | Moya, Jaime M..,Huang, Jianwei.,Lei, Shiming.,Allen, Kevin.,Gao, Yuxiang.,...&Morosan, E..(2023).Real-space and reciprocal-space topology in the Eu(Ga1-xAlx)4 square net system.PHYSICAL REVIEW B,108(6),10. |
| MLA | Moya, Jaime M.,et al."Real-space and reciprocal-space topology in the Eu(Ga1-xAlx)4 square net system".PHYSICAL REVIEW B 108.6(2023):10. |
入库方式： OAI收割
来源：金属研究所
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