气候变化领域集成服务门户(CCPortal): Doping evolution of the Mott-Hubbard landscape in infinite-layer nickelates

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DOI	10.1073/pnas.2007683118
	Doping evolution of the Mott-Hubbard landscape in infinite-layer nickelates
	Goodge B.H.; Li D.; Lee K.; Osada M.; Wang B.Y.; Sawatzky G.A.; Hwang H.Y.; Kourkoutis L.F.
发表日期	2021
ISSN	00278424
卷号	118 期号:2
英文摘要	The recent observation of superconductivity in Nd08Sr02NiO2 has raised fundamental questions about the hierarchy of the underlying electronic structure. Calculations suggest that this system falls in the Mott-Hubbard regime, rather than the charge-transfer configuration of other nickel oxides and the superconducting cuprates. Here, we use state-of-the-art, locally resolved electron energy-loss spectroscopy to directly probe the Mott-Hubbard character of Nd1−xSrxNiO2. Upon doping, we observe emergent hybridization reminiscent of the Zhang-Rice singlet via the oxygen-projected states, modification of the Nd 5d states, and the systematic evolution of Ni 3d hybridization and filling. These experimental data provide direct evidence for the multiband electronic structure of the superconducting infinite-layer nickelates, particularly via the effects of hole doping on not only the oxygen but also nickel and rare-earth bands. © This open access article is distributed under Creative Commons Attribution-NonCommercialNoDerivatives License 4.0 (CC BY-NC-ND).
英文关键词	Electron energy-loss spectroscopy; Hole doping; Infinite-layer nickelates; Mott-Hubbard regime; Superconductivity
语种	英语
来源期刊	Proceedings of the National Academy of Sciences of the United States of America
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/181079
作者单位	School of Applied and Engineering Physics, Cornell University, Ithaca, NY 14853, United States; Kavli Institute at Cornell for Nanoscale Science, Cornell University, Ithaca, NY 14853, United States; Stanford Institute for Materials and Energy Sciences, SLAC National Accelerator Laboratory, Menlo Park, CA 94025, United States; Department of Applied Physics, Stanford University, Stanford, CA 94305, United States; Department of Physics, Stanford University, Stanford, CA 94305, United States; Department of Materials Science and Engineering, Stanford University, Stanford, CA 94305, United States; Department of Physics and Astronomy, University of British Columbia, Vancouver, BC V6T 1Z1, Canada; Stewart Blusson Quantum Matter Institute, University of British Columbia, Vancouver, BC V6T 1Z1, Canada
推荐引用方式 GB/T 7714	Goodge B.H.,Li D.,Lee K.,et al. Doping evolution of the Mott-Hubbard landscape in infinite-layer nickelates[J],2021,118(2).
APA	Goodge B.H..,Li D..,Lee K..,Osada M..,Wang B.Y..,...&Kourkoutis L.F..(2021).Doping evolution of the Mott-Hubbard landscape in infinite-layer nickelates.Proceedings of the National Academy of Sciences of the United States of America,118(2).
MLA	Goodge B.H.,et al."Doping evolution of the Mott-Hubbard landscape in infinite-layer nickelates".Proceedings of the National Academy of Sciences of the United States of America 118.2(2021).