Quantum fluctuation and the magnetically structural symmetry in ferrimagnetic superlattices
文献类型：期刊论文
| 作者 | R. K. Qiu ; Z. D. Zhang |
| 刊名 | Physica Status Solidi B-Basic Solid State Physics
 |
| 出版日期 | 2007 |
| 卷号 | 244期号:6页码:2217-2232 |
| 关键词 | spin-wave theory layered heisenberg ferrimagnets ferromagnetic multilayers antiferromagnet magnetization systems magnetoresistance dynamics magnets lattice |
| ISSN号 | 0370-1972 |
| 中文摘要 | The magnetization and the quantum fluctuations in several ferrimagnetic superlattices consisting of 2-6 different magnetic sublayers are studied by employing Holstein-Primakoff transformations and Green's functions technique only for zero temperature. Investigating ferrimagnetic superlattices with different magnetic sublayers and different spin configurations, we find that when some of spin quantum numbers are adjusted, some sublayer magnetizations at zero-temperature exhibit a minimum, correspondingly, the quantum fluctuation of the system exhibits a maximum point. Different spin configurations have different quantum fluctuations of the system. The maximum point of the quantum fluctuation of the system is related with higher symmetry of the system. It differs from the symmetry of crystallographic point-groups or space-groups, but belongs to the type III Shubnikou group of magnetic group, which describes anti-ferromagnetic or ferrimagnetic state. We define it as the magnetically structural symmetry. The higher the magnetically structural symmetry of the system is, the stronger the quantum fluctuation of the system is, for varying spin quantum numbers and different spin configurations. (C) 2007 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim. |
| 原文出处 | |
| 公开日期 | 2012-04-13 |
| 源URL | [http://ir.imr.ac.cn/handle/321006/33790]  |
| 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,Z. D. Zhang. Quantum fluctuation and the magnetically structural symmetry in ferrimagnetic superlattices[J]. Physica Status Solidi B-Basic Solid State Physics,2007,244(6):2217-2232. |
| APA | R. K. Qiu,&Z. D. Zhang.(2007).Quantum fluctuation and the magnetically structural symmetry in ferrimagnetic superlattices.Physica Status Solidi B-Basic Solid State Physics,244(6),2217-2232. |
| MLA | R. K. Qiu,et al."Quantum fluctuation and the magnetically structural symmetry in ferrimagnetic superlattices".Physica Status Solidi B-Basic Solid State Physics 244.6(2007):2217-2232. |
入库方式： OAI收割
来源：金属研究所
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