Magnetic behaviors of antiferromagnetic films under external field
文献类型：期刊论文
| 作者 | Wang, HY ; Huang, C ; Qian, MC ; Wang, EG |
| 刊名 | JOURNAL OF APPLIED PHYSICS
 |
| 出版日期 | 2004 |
| 卷号 | 95期号:11页码:7551 |
| 关键词 | THIN FERROMAGNETIC-FILMS GREENS-FUNCTION THEORY REORIENTATION TRANSITIONS NI/CU(001) DIRECTION |
| ISSN号 | 0021-8979 |
| 通讯作者 | Wang, HY: Tsing Hua Univ, Dept Phys, Beijing 100084, Peoples R China. |
| 中文摘要 | In this paper, we deal with antiferromagnetic (AFM) films using the many-body Green's function theory under random phase approximation (RPA). This is the first time to be able to calculate all three components of the magnetization of AFM systems simultaneously under RPA. The magnetization of AFM films is not so easily affected by external fields as FM films and the magnetic behavior is rather different from FM films. When an external field B-z is applied along the z direction, the parallel susceptibility chi(parallel to) is zero at 0 K, and then increases with temperature until Neel point T-N. If a field along the x-direction B-x is applied, the perpendicular susceptibility can be approximately expressed as chi(perpendicular to)=1/2gamma\J\, which is a temperature-independent constant, where gamma is the nearest neighbor and J is the exchange interaction. In this case the z-component magnetization is nonzero above T-N. This is because the x-component magnetizations of both sublattices are not zero and the AFM exchange should play a role, which results in the antiparallel z-component magnetizations of the two sublattices. (C) 2004 American Institute of Physics. |
| 收录类别 | SCI |
| 语种 | 英语 |
| 公开日期 | 2013-09-18 |
| 源URL | [http://ir.iphy.ac.cn/handle/311004/41173]  |
| 专题 | 物理研究所_物理所公开发表论文_物理所公开发表论文_期刊论文 |
| 推荐引用方式 GB/T 7714 | Wang, HY,Huang, C,Qian, MC,et al. Magnetic behaviors of antiferromagnetic films under external field[J]. JOURNAL OF APPLIED PHYSICS,2004,95(11):7551. |
| APA | Wang, HY,Huang, C,Qian, MC,&Wang, EG.(2004).Magnetic behaviors of antiferromagnetic films under external field.JOURNAL OF APPLIED PHYSICS,95(11),7551. |
| MLA | Wang, HY,et al."Magnetic behaviors of antiferromagnetic films under external field".JOURNAL OF APPLIED PHYSICS 95.11(2004):7551. |
入库方式： OAI收割
来源：物理研究所
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