A green's function model for ferromagnetism and spin excitations of (ga, mn)as diluted magnetic semiconductors
文献类型：期刊论文
| 作者 | Liu Gui-Bin; Liu Bang-Gui1 |
| 刊名 | Chinese physics b
 |
| 出版日期 | 2009-11-01 |
| 卷号 | 18期号:11页码:5047-5054 |
| 关键词 | Diluted magnetic semiconductor Green's function Ruderman-kittel-kasuya-yosida |
| ISSN号 | 1674-1056 |
| 通讯作者 | Liu bang-gui(bgliu@aphy.iphy.ac.cn) |
| 英文摘要 | We study (ga, mn)as diluted magnetic semiconductors in terms of the ruderman-kittel-kasuya-yosida quantum spin model in green's function approach. random distributions of the magnetic atoms are treated by using an analytical average of magnetic configurations. average magnetic moments and spin excitation spectra as functions of temperature can be obtained by solving self-consistent equations, and the curie temperature t(c) is given explicitly. t(c) is proportional to magnetic atomic concentration, and there exists a maximum for t(c) as a function of carrier concentration. applied to (ga, mn)as, the theoretical results are consistent with experiment and the experimental t(c) can be obtained with reasonable parameters. this modelling can also be applied to other diluted magnetic semiconductors. |
| WOS关键词 | MAGNETOTRANSPORT PROPERTIES ; TRANSPORT-PROPERTIES ; EXCHANGE INTERACTION ; CURIE-TEMPERATURE ; 1ST PRINCIPLES ; (GA,MN)AS ; MN ; ZN1-XCRXTE ; GAMNAS ; FILMS |
| WOS研究方向 | Physics |
| WOS类目 | Physics, Multidisciplinary |
| 语种 | 英语 |
| WOS记录号 | WOS:000271631200073 |
| 出版者 | IOP PUBLISHING LTD |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2373708 |
| 专题 | 物理研究所 |
| 通讯作者 | Liu Bang-Gui |
| 作者单位 | 1.Chinese Acad Sci, Inst Phys, Beijing 100190, Peoples R China 2.Beijing Natl Lab Condensed Matter Phys, Beijing 100190, Peoples R China |
| 推荐引用方式 GB/T 7714 | Liu Gui-Bin,Liu Bang-Gui. A green's function model for ferromagnetism and spin excitations of (ga, mn)as diluted magnetic semiconductors[J]. Chinese physics b,2009,18(11):5047-5054. |
| APA | Liu Gui-Bin,&Liu Bang-Gui.(2009).A green's function model for ferromagnetism and spin excitations of (ga, mn)as diluted magnetic semiconductors.Chinese physics b,18(11),5047-5054. |
| MLA | Liu Gui-Bin,et al."A green's function model for ferromagnetism and spin excitations of (ga, mn)as diluted magnetic semiconductors".Chinese physics b 18.11(2009):5047-5054. |
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来源：物理研究所
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