The photonic band structures of body-centred-tetragonal crystals composed of ionic or metal spheres
Weiyi Zhang; Zhenlin Wang; An Hu; Naiben Ming; Weiyi Zhang; National Laboratory of Solid State Microstructures and Department of Physics, Nanjing University, Nanjing 210093, China; Zhenlin Wang; National Laboratory of Solid State Microstructures and Department of Physics, Nanjing University, Nanjing 210093, China; An Hu; National Laboratory of Solid State Microstructures and Department of Physics, Nanjing University, Nanjing 210093, China; Naiben Ming; National Laboratory of Solid State Microstructures and Department of Physics, Nanjing University, Nanjing 210093, China
Журнал:
Journal of Physics: Condensed Matter
Дата:
2000-06-19
Аннотация:
The photonic band structures of body-centred-tetragonal (BCT) crystals composed of ionic or metal spheres are computed using the highly efficient vector-wave Korringa-Kohn-Rostoker (KKR) method; an absolute band gap is found for the photonic crystals with high filling ratio. The band gap is smaller in the crystals composed of ionic spheres than in those composed of metal spheres. The particular BCT structure was chosen since such structure can be easily realized in an electrorheological fluid in the presence of an electric field.
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