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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 | 2008/06 |
| 形態種別 | 研究論文 |
| 査読 | 査読あり |
| 標題 | Nature of magnetic coupling between Mn ions in As-grown Ga(1-x)Mn(x)As studied by x-ray magnetic circular dichroism |
| 執筆形態 | その他 |
| 掲載誌名 | PHYSICAL REVIEW LETTERS |
| 出版社・発行元 | AMER PHYSICAL SOC |
| 巻・号・頁 | 100(24) |
| 著者・共著者 | Y. Takeda,M. Kobayashi,T. Okane,T. Ohkochi,J. Okamoto,Y. Saitoh,K. Kobayashi,H. Yamagami,A. Fujimori,A. Tanaka,J. Okabayashi,M. Oshima,S. Ohya,P. N. Hai,M. Tanaka |
| 概要 | The magnetic properties of as-grown Ga(1-x)Mn(x)As have been investigated by the systematic measurements of temperature and magnetic field dependent soft x-ray magnetic circular dichroism (XMCD). The intrinsic XMCD intensity at high temperatures obeys the Curie-Weiss law, but a residual spin magnetic moment appears already around 100 K, significantly above the Curie temperature (T(C)), suggesting that short-range ferromagnetic correlations are developed above T(C). The present results also suggest that the antiferromagnetic interaction between the substitutional and interstitial Mn (Mn(int)) ions exists and that the amount of the Mn(int) affects T(C). |
| DOI | 10.1103/PhysRevLett.100.247202 |
| ISSN | 0031-9007 |