| アイテムタイプ |
学術雑誌論文 / Journal Article(1) |
| 公開日 |
2025-01-28 |
| タイトル |
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タイトル |
Ni K Edge X-Ray Absorption and Emission in NdNiO3 |
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言語 |
en |
| 言語 |
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言語 |
eng |
| 資源タイプ |
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資源タイプ識別子 |
http://purl.org/coar/resource_type/c_6501 |
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資源タイプ |
journal article |
| 著者 |
Jonathan Pelliciari
Kenji Ishii
Shriram Ramanathan
Riccardo Comin
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| 抄録 |
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内容記述タイプ |
Abstract |
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内容記述 |
Recent developments in the field of superconductivity place nickelates at the forefront of the materials studied in condensed matter physics. The discovery of superconductivity under doping, pressure, and in thin films in multiple families of nickelates renewed the interest into their electronic and magnetic properties. Here we perform an investigation of Ni-K edge x-ray absorption and Kbeta x-ray emission spectroscopy in thin films of NdNiO3 as a function of temperature and doping. NdNiO3 is a benchmark quantum material displaying a metal-to-insulator transition concomitant with the appearance of magnetic ordering tunable under oxygen treatment. Electronically the resistivity of NdNiO3 raises significantly with the concomitant with the suppression of the magnetic order. The oxygen treatment acts as doping changing the oxidation state of nickel. Our study reveals the effective change of the nickel oxidation state from Ni3+ to Ni2+ and the concomitant change of spin state upon doping proving that oxygen annealing electron doped the system at the nickel site. From the temperature dependence study, we observe little change between 10 K and 300 K indicating that the local electronic effects on nickel and magnetic ordering act at lower energies compared to any spin state transitions. Overall, our work proves the feasibility of XAS and XES hard x-ray experiments on thin films and shows their effectiveness to map the electronic and magnetic structure of nickel oxides. |
| 書誌情報 |
SPring-8/SACLA 利用研究成果集
巻 12,
号 5,
p. 267-270,
発行日 2024-10
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| ISSN |
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収録物識別子タイプ |
ISSN |
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収録物識別子 |
2187-6886 |
| DOI |
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識別子タイプ |
DOI |
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関連識別子 |
10.18957/rr.12.5.267 |
