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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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| 発行・発表の年月 | 2015/08/03 |
| 形態種別 | 研究論文 |
| 査読 | 査読あり |
| 標題 | Thickness-dependent magnetic properties and strain-induced orbital magnetic moment in SrRuO3 thin films |
| 執筆形態 | その他 |
| 掲載誌名 | Physical Review B - Condensed Matter and Materials Physics |
| 出版社・発行元 | American Physical Society (APS) |
| 巻・号・頁 | 92(6) |
| 著者・共著者 | K. Ishigami,K. Yoshimatsu,D. Toyota,M. Takizawa,T. Yoshida,G. Shibata,T. Harano,Y. Takahashi,T. Kadono,V. K. Verma,V. R. Singh,Y. Takeda,T. Okane,Y. Saitoh,H. Yamagami,T. Koide,M. Oshima,H. Kumigashira,A. Fujimori |
| 概要 | © 2015 American Physical Society. ©2015 American Physical Society. Thin films of the ferromagnetic metal SrRuO3 (SRO) show a varying easy magnetization axis depending on the epitaxial strain, and undergo a metal-to-insulator transition with decreasing film thickness. We have investigated the magnetic properties of SRO thin films with varying thicknesses fabricated on SrTiO3(001) substrates by soft x-ray magnetic circular dichroism at the Ru M2,3 edge. Results have shown that, with decreasing film thickness, the film changes from ferromagnetic to nonmagnetic at around 3 monolayer thickness, consistent with previous magnetization and magneto-optical Kerr effect measurements. The orbital magnetic moment perpendicular to the film was found to be ∼0.1μB/Ru, and remained nearly unchanged with decreasing film thickness while the spin magnetic moment decreases. A mechanism for the formation of the orbital magnetic moment is discussed based on the electronic structure of the compressively strained SRO film. |
| DOI | 10.1103/PhysRevB.92.064402 |
| ISSN | 1098-0121/1550-235X |
| PermalinkURL | http://link.aps.org/article/10.1103/PhysRevB.92.064402 |
| researchmap用URL | http://harvest.aps.org/v2/journals/articles/10.1103/PhysRevB.92.064402/fulltext |