如题,文献中总是会涉及到这个问题,文献中也解释过很多次,但本人不是学物理出身,总是也看不明白到底是什么意思,这个问题搁置了很久了也没能解决,什么布里渊区高对称点重合,真的是搞不明白,再次发帖求教……
帖子中的两个图是文献的截图,第一幅是4X4超胞,第二幅是3X3超胞,文献中4X4超胞使用的K点密度是6X6X1,3X3超胞使用的是12X12X1,实在是不明白为什么……
这里是原文的一段描述:Figures 1(b) and 2(b) plot the corresponding Brillouin zone of the 4 × 4 and 3 × 3 supercells comparing to that of the 1 × 1 supercell. One can notice that K4 and K4 valley indices in the 4 × 4 supercells are well separated and thus good quantum numbers, but that those in 3 × 3 are folded into the 3 point and are indistinguishable. For simplicity, we omit all the superscripts of high symmetry points K4, K4, 3, and4 in the following.
请各位前辈多多指教
3X3.jpg