In fact, the seemingly anomalous dispersion of the impurity band in the first Brillouinzone is a result from band folding.
在第一布里渊区中出现的杂质带的反常色散实际上是能带折叠的结果。
2
Our results indicate that the energy valley of conduction band of Ge is not lying in the center of Brillouinzone and the constant energy surface possesses non-spherical symmetry.
这些结果表明锗导带能谷不在布里渊区中心，且具有非球形对称等能面。
3
While the proposed photonic-crystal does not exhibit complete band-gap across the entire Brillouinzone, a stable defect exists provided we carefully tune the structural parameters.