| 超元胞方法研究平移群对称性对声子带隙的影响 |
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| 引用本文： | 牟中飞,吴福根,张欣,钟会林. 超元胞方法研究平移群对称性对声子带隙的影响[J]. 物理学报, 2007, 56(8): 4694-4699 |
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| 作者姓名： | 牟中飞 吴福根 张欣 钟会林 |
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| 作者单位： | 广东工业大学实验教学部,物理与光电工程学院,广州 510090 |
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| 基金项目： | 国家自然科学基金;广东省自然科学基金 |
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| 摘 要： | 采用基于超元胞的平面波展开法，计算了由水银(水)正四棱柱体按正方格子排列于水(水银)基体中所组成的两种声子晶体的能带结构.通过改变两相邻的柱体底面边长之比来改变声子晶体的平移群对称性.结果发现，改变相邻柱体的底面边长之比，具有很好的调节声学带隙的作用.研究表明，声子晶体的平移群对称性对于其带隙的形成具有重要影响,同时还表明,超元胞方法也是研究声子晶体平移群对称性影响声子带隙形成的一种有效方法. 关键词：声子晶体带隙对称性
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| 关 键 词： | 声子晶体 带隙 对称性 |
| 文章编号： | 1000-3290/2007/56(08)/4694-06 |
| 收稿时间： | 2006-11-06 |
| 修稿时间： | 2006-11-06 |
Effect of translation group symmetry on phononic band gaps studied by supercell calculation |
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| Mu Zhong-Fei,Wu Fu-Gen,Zhang Xin,Zhong Hui-Lin. Effect of translation group symmetry on phononic band gaps studied by supercell calculation[J]. Acta Physica Sinica, 2007, 56(8): 4694-4699 |
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| Authors: | Mu Zhong-Fei Wu Fu-Gen Zhang Xin Zhong Hui-Lin |
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| Affiliation: | Experiment Center, College of Physics and Optoelectronic Engineering, Guangdong University of Technology, Guangzhou 510090, China |
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| Abstract: | The band structure of two kinds of phononic crystals (the square lattice of mercury (water) rods in a water (mercury) host) has been calculated using the plane-wave expansion method based on super cell. The translation group symmetry of phononic crystal is changed by changing the size of adjacent rods. We found that by changing the lengths of sides of adjacent rods one can effectively adjust the phononic band gaps. The present work shows that the translation group symmetry of phononic crystal has an important influence on the formation of its band gaps, and the method based on super cell is an effective method of studying the influence of translation group symmetry of phononic crystal on the formation of phononic band gaps. |
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| Keywords: | phononic crystal band gap symmetry |
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