Predicted semiconductor to metal transition from LiBSi2 to RbBSi2 by first-principles calculations

被引：2
|
作者：
Zhang, Huijun [1 ]
Ren, Jiadong [1 ]
Wu, Lailei [2 ]
Zhang, Jingwu [2 ]
机构：
[1] Yanshan Univ, Coll Informat Sci & Engn, Qinhuangdao 066004, Peoples R China
[2] Yanshan Univ, Coll Mat Sci & Engn, Key Lab Metastable Mat Sci & Technol, Qinhuangdao 066004, Peoples R China
来源：
COMPUTATIONAL MATERIALS SCIENCE | 2016年 / 124卷
关键词：
First-principles calculations; Structure; Electronic properties; Stability; SILICON; FRAMEWORK; ALLOTROPE; PRESSURE; CHANNELS;
D O I：
10.1016/j.commatsci.2016.08.002
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
By means of the first-principles calculations, we performed a systematical investigation on the structure, electronic and mechanical properties of MBSi2 (M = Li, Na, K and Rb) and BSi2. The changes of lattice parameters and interatomic distance from BSi2 to RbBSi2 were discussed in detail. Both LiBSi2 and NaBSi2 with distorted sp(3) hybridization BSi2 three period networks are semiconductors, whereas KBSi2 and RbBSi2 with mixtures of sp(2) and sp(3) hybridization are metallic because of the weaker interaction in two-dimensional BSi2 net. Interestingly, a new BSi2 phase with no guest atom, featuring a metallic behavior, is predicted to be dynamically and mechanically stable. (C) 2016 Published by Elsevier B.V.
引用
收藏
页码：267 / 272
页数：6
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