Mean-field study of fe(2+)- and co(2+)-doped diluted magnetic semiconductors
文献类型：期刊论文
| 作者 | Zheng, YH; Xia, JB |
| 刊名 | Physical review b
 |
| 出版日期 | 2005-11-01 |
| 卷号 | 72期号:19页码:6 |
| ISSN号 | 1098-0121 |
| DOI | 10.1103/physrevb.72.195204 |
| 通讯作者 | Zheng, yh() |
| 英文摘要 | Based on a modified mean-field model, we calculate the curie temperatures of fe(2+)- and co(2+)-doped diluted magnetic semiconductors (dmss) and their dependence on the hole concentration. we find that the curie temperatures increase with an increase in hole concentration and the relationship t(c)proportional to p(1/3) also approximately holds for fe(2+)- and co(2+)-doped systems with moderate hole concentration. for either low or high hole concentrations, however, the p(1/3) law is violated due to the anomalous magnetization of the fe(2+) and co(2+) ions, and the nonparabolic nature of the hole bands. further, the values of t(c) for fe(2+)- and co(2+)-doped dmss are significantly higher than those for mn(2+)-doped dmss, due to the larger exchange interaction strength. |
| WOS关键词 | ROOM-TEMPERATURE FERROMAGNETISM ; ZNO ; SPECTROSCOPY ; (GA,MN)AS ; CRYSTALS ; DESIGN ; FILMS ; FE |
| WOS研究方向 | Physics |
| WOS类目 | Physics, Condensed Matter |
| 语种 | 英语 |
| 出版者 | AMER PHYSICAL SOC |
| WOS记录号 | WOS:000233603700058 |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2426526 |
| 专题 | 半导体研究所 |
| 通讯作者 | Zheng, YH |
| 作者单位 | 1.Chinese Ctr Adv Sci & Technol, World Lab, Beijing 100080, Peoples R China 2.Chinese Acad Sci, Inst Semicond, Beijing 100083, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zheng, YH,Xia, JB. Mean-field study of fe(2+)- and co(2+)-doped diluted magnetic semiconductors[J]. Physical review b,2005,72(19):6. |
| APA | Zheng, YH,&Xia, JB.(2005).Mean-field study of fe(2+)- and co(2+)-doped diluted magnetic semiconductors.Physical review b,72(19),6. |
| MLA | Zheng, YH,et al."Mean-field study of fe(2+)- and co(2+)-doped diluted magnetic semiconductors".Physical review b 72.19(2005):6. |
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来源：半导体研究所
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