二维磁振子晶体中点缺陷模的耦合性质研究

物理学报

二维磁振子晶体中点缺陷模的耦合性质研究

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曹永军, 谭伟, 刘燕. 2012: 二维磁振子晶体中点缺陷模的耦合性质研究, 物理学报, 61(11): 477-481.

引用本文:

曹永军, 谭伟, 刘燕. 2012: 二维磁振子晶体中点缺陷模的耦合性质研究, 物理学报, 61(11): 477-481.

2012: Coupling characteristics of point defect modes in two-dimensional magnonic crystals, Acta Physica Sinica, 61(11): 477-481.

Citation:

2012: Coupling characteristics of point defect modes in two-dimensional magnonic crystals, Acta Physica Sinica, 61(11): 477-481.

Coupling characteristics of point defect modes in two-dimensional magnonic crystals

摘要: 在超原胞近似下，利用平面波展开法数值计算了多点缺陷的二维磁振子晶体带结构及其部分缺陷模的磁化强度场分布．研究结果表明，点缺陷模间的能量发生了耦合，使自旋波沿着缺陷方向传播．利用该性质可将含多点缺陷体的二维磁振子晶体作为自旋波导波器件的制作材料．
- 磁振子晶体 /
- 点缺陷 /
- 波导 /
- 平面波展开法
Abstract: Using the plane-wave expansion method under supercell approximation, band structures of spin waves propagating in two- dimensional magnonic crystals with coupling multi-point defects and magnetization field distributions of some defect modes are calculated. The results indicate that the energies of point defect modes can couple each other, and propagate along the direction of the multi-point defects in these structures. Utilizing the coupling characteristics of defect modes, two-dimensional magnonic crystals can be used as the fabricating materials of spin-wave waveguides.