Effects of competition between the anisotropy and the spin quantum number on the magnon energy gap in a four-layer ferromagnetic superlattice
文献类型：期刊论文
| 作者 | R. K. Qiu ; P. P. Song ; Z. D. Zhang |
| 刊名 | Journal of Magnetism and Magnetic Materials
 |
| 出版日期 | 2009 |
| 卷号 | 321期号:19页码:3031-3037 |
| 关键词 | Ferromagnetic superlattice Magnon energy gap Anisotropy Spin quantum number Interlayer exchange coupling Symmetry of the system magnetically structural symmetry layered heisenberg ferrimagnets wave theory interlayer exchange magnetization magnetoresistance multilayers composites dependence magnets |
| ISSN号 | 0304-8853 |
| 中文摘要 | The magnon energy bands are studied for a four-layer ferromagnetic superlattice, with regard to the effects of the competition between the anisotropy and the spin quantum number. A spacial attention is also paid of the effects for the symmetry of the system. It is found that there modulated energy gaps exist in the magnon energy band along K(x) direction perpendicular to the superlattice plane. The magnetic anisotropy affects significantly the magnon energy gaps. The sero energy gap Dw(23) correlates with the conditions between anisotropy constants, D(1) + D(3) = D(2) + D(4) and D(1) + D(3) (or D(2) = D(4)), while the disappearance of the magnon energy gaps Dw(12) and Dw(34) corresponds to a translational symmetry of x-direction in a unit cell. When the parameters of the system deviate from these conditions, the energy gaps Dw(12), Dw(23) and Dw(34) become larger. There is a competition effect of the the anisotropy and the spin quantum number on the magnon energy gaps Dw(12) and Dw(23). When the symmetry of the system is higher, the competition can achieve a balance to cause the sero energy gap. (C) Elsevier B.V. All rights reserved. |
| 原文出处 | |
| 公开日期 | 2012-04-13 |
| 源URL | [http://210.72.142.130/handle/321006/32247]  |
| 专题 | 金属研究所_中国科学院金属研究所 |
| 推荐引用方式 GB/T 7714 | R. K. Qiu,P. P. Song,Z. D. Zhang. Effects of competition between the anisotropy and the spin quantum number on the magnon energy gap in a four-layer ferromagnetic superlattice[J]. Journal of Magnetism and Magnetic Materials,2009,321(19):3031-3037. |
| APA | R. K. Qiu,P. P. Song,&Z. D. Zhang.(2009).Effects of competition between the anisotropy and the spin quantum number on the magnon energy gap in a four-layer ferromagnetic superlattice.Journal of Magnetism and Magnetic Materials,321(19),3031-3037. |
| MLA | R. K. Qiu,et al."Effects of competition between the anisotropy and the spin quantum number on the magnon energy gap in a four-layer ferromagnetic superlattice".Journal of Magnetism and Magnetic Materials 321.19(2009):3031-3037. |
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来源：金属研究所
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