中北大学学报（自然科学版）2011，Vol.32Issue(5)：545-549,5.DOI:10.3969/j.issn.1673-3193.2011.05.004
非对称双层磁性薄膜中的自旋波研究
Study of Spin Waves in Asymmetry Magnetic Bilayer System
摘要
Abstract
Based on the one-dimension Heisenberg model, the eigenproblems of spin waves were overcome through solving energy constrained equation and interface rescaling equation by using interface-rescaling approach in ferromagnetic and antiferromagnetic bilayer. The low temperature excitation of spin waves was discussed on layer system of antiferromagnetic coupling. It concluded that three modes of spin waves might exist, the bulk mode, the interface mode, and the perfect confined mode. The propagation behaviors and the dispersion relations of the three modes are different. The wave of bulk mode propagates freely in the system with different amplitude in each sublayer, and the wave forms are pinning in interface. With the increasing of the energy, the perfect confined phenomenon becomes obvious in antiferromagnetic sublayer. The interface modes, which have the lowest energy, can not propagate in system.关键词
铁磁/反铁磁薄膜/反铁磁性耦合/自旋波/色散关系/界面参数化方法Key words
ferromagnetic/antiferromagnetic bilayers/ antiferromagnetic coupling/ spin waves/ dispersion relations/ interface-rescaling approach分类
数理科学引用本文复制引用
王焕,荣建红,云国宏..非对称双层磁性薄膜中的自旋波研究[J].中北大学学报（自然科学版）,2011,32(5):545-549,5.基金项目
内蒙古农业大学科技创新团队资助计划(NDPYTD2010-7) （NDPYTD2010-7）
内蒙古大学高层次引进人才科研启动基金资助项目(207057) （207057）
