十二重准晶中的方向缺陷  

Directional defect modes in twelve-fold-symmetry quasicrystal

作　　者：冯志芳[1] 刘荣鹃[2] 李志远[2] 

机构地区：[1]北京化工大学理学院,北京100029 [2]中国科学院物理研究所光物理实验室,北京100190

出　　处：《物理学报》2009年第3期1948-1953,共6页Acta Physica Sinica

基　　金：国家自然科学基金(批准号:10704006);北京化工大学校青年博士基金资助的课题~~

摘　　要：采用多重散射的方法研究了十二重准晶中的缺陷模,发现在十二重准晶中存在方向缺陷,且当缺陷组合围绕对称中心旋转时,在保持原有缺陷模的基础上,出现了新的缺陷模.The translational symmetric associated with photonic crystal is absent in the rotationally symmetric quasiperiodic photonic crystal （QPCs）,and the quasiperiodic photonic crystal has more defect modes than photonic crystal because of it. In this paper,we investigate the defect modes in the 12-fold quasiperiodic photonic crystal by the multiple scattering method. We find that there is a directional defect mode in quasiperiodic photonic crystal. When the defect rotates against the centre of the symmetry,there emerges a new defect mode.

关 键 词：准晶 缺陷 带隙 

分 类 号：O77[理学—晶体学]