Complex magnetic order in nickelate slabs

CORC > 宁波材料技术与工程研究所 > 中国科学院宁波材料技术与工程研究所 > 2018专题

	Complex magnetic order in nickelate slabs
	He, F.; Hepting, M.; Green, R. J.; Zhong, Z.; Bluschke, M.; Suyolcu, Y. E.; Macke, S.; Frano, A.; Catalano, S.; Gibert, M.
刊名	NATURE PHYSICS
	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
内容类型	期刊论文
源URL	[http://ir.nimte.ac.cn/handle/174433/17059]
专题	2018专题
推荐引用方式 GB/T 7714	He, F.,Hepting, M.,Green, R. J.,et al. Complex magnetic order in nickelate slabs[J]. NATURE PHYSICS,2018,14(11):1097.
APA	He, F..,Hepting, M..,Green, R. J..,Zhong, Z..,Bluschke, M..,...&Benckiser, E..(2018).Complex magnetic order in nickelate slabs.NATURE PHYSICS,14(11),1097.
MLA	He, F.,et al."Complex magnetic order in nickelate slabs".NATURE PHYSICS 14.11(2018):1097.