论文标题
周期表中二维金属的动力稳定性
Dynamical stability of two-dimensional metals in the periodic table
论文作者
论文摘要
我们通过计算第一原理的声子结构来研究从LI到Pb的元素二维金属（2D）金属的动力稳定性，其中假定2D结构是刨床六边形，搭扣蜂窝和弯曲的方形晶状体结构。我们显示了2D结构的稳定性与三维结构之间的关系。这为合金提供了材料设计概念，在这种概念上，与稳定的2D结构相似，而不是合金的能量稳定性，对于产生动态稳定的合金很重要。
We study the dynamical stability of elemental two-dimensional (2D) metals from Li to Pb by calculating the phonon band structure from first principles, where 2D structures are assumed to be planer hexagonal, buckled honeycomb, and buckled square lattice structures. We show the relationship between the stability of 2D structures and that of three-dimensional structures. This provides a material design concept for alloys, where the similarity with regard to the stable 2D structures, rather than the energetic stability of alloy, is important to yield dynamically stable alloys.
