Effect of anisotropy on the magnon energy gap in a two-layer ferromagnetic superlattice
文献类型：期刊论文
| 作者 | R. K. Qiu ; J. Liang ; Q. F. Li ; Z. D. Zhang ; P. P. Song ; X. M. Hong |
| 刊名 | Physica B-Condensed Matter
 |
| 出版日期 | 2009 |
| 卷号 | 404期号:8-11页码:1295-1300 |
| 关键词 | Ferromagnetic superlattice Magnon energy gap Anisotropy Spin quantum numbers Interlayer exchange couplings Symmetry of the system layered magnetic-structures spin-waves exchange magnetoresistance multilayers composites bilayer |
| ISSN号 | 0921-4526 |
| 中文摘要 | The magnon energy bands or spectra in a two-layer ferromagnetic superlattice are studied. It is found that a modulated energy gap exists in the magnon energy band along K(x) direction perpendicular to the superlattice plane, which is different from the optical magnon gap at K(x) = 0. The anisotropy, the spin quantum numbers and the interlayer exchange couplings all affect the magnon energy gap. If the anisotropy exists, there will be no acoustic energy branch in the system. There is a competition effect of the anisotropy and the spin quantum number on the magnon energy gap. The competition achieves a balance at the zero energy gap, at which the symmetry of the system is higher. The two energy spectra of the two-layer ferromagnetic superlattice are lowered with increasing temperature. (C) 2009 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/321006/32246]  |
| 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,J. Liang,Q. F. Li,et al. Effect of anisotropy on the magnon energy gap in a two-layer ferromagnetic superlattice[J]. Physica B-Condensed Matter,2009,404(8-11):1295-1300. |
| APA | R. K. Qiu,J. Liang,Q. F. Li,Z. D. Zhang,P. P. Song,&X. M. Hong.(2009).Effect of anisotropy on the magnon energy gap in a two-layer ferromagnetic superlattice.Physica B-Condensed Matter,404(8-11),1295-1300. |
| MLA | R. K. Qiu,et al."Effect of anisotropy on the magnon energy gap in a two-layer ferromagnetic superlattice".Physica B-Condensed Matter 404.8-11(2009):1295-1300. |
入库方式： OAI收割
来源：金属研究所
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