Effect of basis configuration on acoustic band structure in two-dimensional complex phononic crystals
二维复式声子晶体中基元配置对声学能带结构的影响

The effect of basis configuration on acoustic band structure in two-dimensional complex phononic crystals (PCs) was investigated. We found that when the basis configuration was changed,the irreducible Brillouin zone (BZ) of PCs might be changed too,and part of band extrema were no longer on the high-symmetry lines. In particular,the PCs with some basis configurations were forced to render the whole first BZ irreducible. Therefore,besides the high symmetrical PCs,only by throughout investigation of the BZ ca...