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ヤマガミ ヒロシ
YAMAGAMI HIROSHI
山上 浩志 所属 京都産業大学 理学部 物理科学科 職種 教授 |
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| 言語種別 | 英語 |
| 発行・発表の年月 | 2011/05 |
| 形態種別 | 研究論文 |
| 査読 | 査読あり |
| 標題 | Tunable ferromagnetism in Ni0.97-yMnyO thin films with hole doping and their electronic structures |
| 執筆形態 | その他 |
| 掲載誌名 | PHYSICAL REVIEW B |
| 出版社・発行元 | AMER PHYSICAL SOC |
| 巻・号・頁 | 83(19) |
| 著者・共著者 | Yuan-Hua Lin,M. Kobayashi,Rongjuan Zhao,G. S. Song,Ce-Wen Nan,Shun Li,Wen-Sheng Yan,J. I. Hwang,Y. Ooki,A. Fujimori,Y. Takeda,S. I. Fujimori,K. Terai,T. Okane,Y. Saitoh,H. Yamagami,Chen Gao |
| 概要 | We report p-type LiyNi0.97-yMn0.03O thin films (LNMO) via a simple solution method on silicon substrates. Magnetization measurements reveal that room-temperature tunable ferromagnetism can be observed in these LNMO thin films. The Mn L-2,L-3 x-ray absorption and core-level photoelectron spectra indicate that Mn consists of the Mn2+ and Mn3+ components. The O K-edge x-ray absorption spectroscopy reveals that the majority of holes introduced by the Li doping have mainly O 2p character, and the hole concentration can be enhanced by almost two orders of magnitude by the Li doping, which can tune magnetism and T-C. This ferromagnetic behavior in these LNMO thin films may be ascribed to the effective carrier-induced ferromagnetism (p-d exchange interaction through the O 2p band). |
| DOI | 10.1103/PhysRevB.83.193105 |
| ISSN | 1098-0121 |