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| ファイル | 記述 | サイズ | フォーマット | |
|---|---|---|---|---|
| PhysRevX.12.011017.pdf | 1.4 MB | Adobe PDF | 見る/開く |
| タイトル: | CaCu₃Ru₄O₁₂: A High-Kondo-Temperature Transition-Metal Oxide |
| 著者: | Takegami, D. Kuo, C.-Y. Kasebayashi, K. Kim, J.-G. Chang, C. F. Liu, C. E. Wu, C. N. Kasinathan, D. Altendorf, S. G. Hoefer, K. Meneghin, F. Marino, A. Liao, Y. F. Tsuei, K. D. Chen, C. T. Ko, K.-T. Günther, A. Ebbinghaus, S. G. Seo, J. W. Lee, D. H. Ryu, G. Komarek, A. C. Sugano, S. Shimakawa, Y. Tanaka, A. Mizokawa, T. Kuneš, J. Tjeng, L. H. Hariki, A. |
| 著者名の別形: | 加瀬林, 啓人 菅野, 聡 島川, 祐一 田中, 新 溝川, 貴司 播木, 敦 |
| キーワード: | Condensed Matter Physics Magnetism Electronic structure Kondo effect Magnetism Cuprates Transition metal oxides DFT+DMFT Density functional theory Dynamical mean field theory Hard x-ray photoelectron spectroscopy Photoemission spectroscopy X-ray absorption spectroscopy X-ray photoelectron spectroscopy |
| 発行日: | Jan-2022 |
| 出版者: | American Physical Society (APS) |
| 誌名: | Physical Review X |
| 巻: | 12 |
| 号: | 1 |
| 論文番号: | 011017 |
| 抄録: | We present a comprehensive study of CaCu₃Ru₄O₁₂ using bulk sensitive hard and soft x-ray spectroscopy combined with local-density approximation + dynamical mean-field theory (DMFT) calculations. Correlation effects on both the Cu and Ru ions can be observed. From the Cu 2p core-level spectra, we deduce the presence of magnetic Cu²⁺ ions hybridized with a reservoir of itinerant electrons. The strong photon energy dependence of the valence band allows us to disentangle the Ru, Cu, and O contributions and, thus, to optimize the DMFT calculations. The calculated spin and charge susceptibilities show that the transition metal oxide CaCu₃Ru₄O₁₂ must be classified as a Kondo system and that the Kondo temperature is in the range of 500–1000 K. |
| 記述: | 遷移金属酸化物の近藤効果を初めて実証 --電子相関物性の設計・探索の新たなプラットホームを開拓--. 京都大学プレスリリース. 2022-01-31. Open access publication funded by the Max Planck Society. |
| 著作権等: | Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI. |
| URI: | http://hdl.handle.net/2433/267780 |
| DOI(出版社版): | 10.1103/PhysRevX.12.011017 |
| 関連リンク: | https://www.kyoto-u.ac.jp/ja/research-news/2022-01-31 |
| 出現コレクション: | 学術雑誌掲載論文等 |
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