Complex magnetic order in nickelate slabs
文献类型：期刊论文
| 作者 | Keimer, B.; Hepting, M.; Green, R. J.; Zhong, Z.; Bluschke, M.; Suyolcu, Y. E.; Macke, S.; Frano, A.; Catalano, S.; Gibert, M. |
| 刊名 | NATURE PHYSICS
 |
| 出版日期 | 2018 |
| 卷号 | 14期号:11页码:1097 |
| 关键词 | Metal-insulator-transition Charge-transfer Exchange Heterostructures Superlattices Perovskites Information Scattering Images Spin |
| 英文摘要 | Magnetic ordering phenomena have a profound influence on the macroscopic properties of correlated-electron materials, but their realistic prediction remains a formidable challenge. An archetypical example is the ternary nickel oxide system RNiO3 (R = rare earth), where the period-four magnetic order with proposals of collinear and non-collinear structures and the amplitude of magnetic moments on different Ni sublattices have been subjects of debate for decades(1-6). Here we introduce an elementary model system-NdNiO3 slabs embedded in a non-magnetic NdGaO3 matrix-and use polarized resonant X-ray scattering (RXS) to show that both collinear and non-collinear magnetic structures can be realized, depending on the slab thickness. The crossover between both spin structures is correctly predicted by density functional theory and can be qualitatively understood in a low-energy spin model. We further demonstrate that the amplitude ratio of magnetic moments in neighbouring NiO6 octahedra can be accurately determined by RXS in combination with a correlated double cluster model. Targeted synthesis of model systems with controlled thickness and synergistic application of polarized RXS and ab initio theory thus provide new perspectives for research on complex magnetism, in analogy to two-dimensional materials created by exfoliation(7). |
| 学科主题 | Materials Science |
| 语种 | 英语 |
| 公开日期 | 2018-12-04 |
| 源URL | [http://ir.nimte.ac.cn/handle/174433/17058]  |
| 专题 | 2018专题 |
| 推荐引用方式 GB/T 7714 | Keimer, B.,Hepting, M.,Green, R. J.,et al. Complex magnetic order in nickelate slabs[J]. NATURE PHYSICS,2018,14(11):1097. |
| APA | Keimer, B..,Hepting, M..,Green, R. J..,Zhong, Z..,Bluschke, M..,...&Sawatzky, G. A..(2018).Complex magnetic order in nickelate slabs.NATURE PHYSICS,14(11),1097. |
| MLA | Keimer, B.,et al."Complex magnetic order in nickelate slabs".NATURE PHYSICS 14.11(2018):1097. |
入库方式： OAI收割
来源：宁波材料技术与工程研究所
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