J4 ›› 2009, Vol. 47 ›› Issue (05): 1050-1053.

• 材料科学 • 上一篇    下一篇

利用第一性原理计算HgSe的结构相变和光学性质

赵瑞1, 张启周2, 朱秀云2, 彭刚3, 吴宝嘉3, 崔晓岩1,3, 郝爱民2,3   

  1. 1. 吉林师范大学 计算机学院, 吉林 四平136000|2. 河北科技师范学院 数理系, 河北 秦皇岛 066004|3. 吉林大学 超硬材料国家重点实验室, 长春 130012
  • 收稿日期:2009-07-24 出版日期:2009-09-26 发布日期:2009-11-03
  • 通讯作者: 郝爱民 E-mail:aiminhao1991@yahoo.com.cn.

Structural Stabilities and Optical Properties of HgSe Calculated via First-principles

ZHAO Rui1, ZHANG Qi-zhou2, ZHU Xiu-yun2, PENG Gang3, WU Bao-jia3, CUI Xiao-yan1,3, HAO Ai-min2,3   

  1. 1. |College of Computer, Jilin Normal University, Siping 136000, Jilin Province, China|2. Department of Mathematics and Physics, Hebei Normal University of Science and Technology, Qinhuangdao 066004, Hebei Province, China|3. State Key Laboratory for Superhard Materials, Jilin University, Changchun 130012, China
  • Received:2009-07-24 Online:2009-09-26 Published:2009-11-03
  • Contact: HAO Ai-min E-mail:aiminhao1991@yahoo.com.cn.

摘要:

利用基于密度泛函的第一性原理, 计算了高压下HgSe的结构相变和光学性质, 并给出导带与价带之间跃迁激发峰的位置. 结果表明, HgSe的压致结构转变顺序为闪锌矿结构(HgSe-Ⅰ)→朱砂相结构(HgSe-Ⅱ)→岩盐矿结构(HgSe-Ⅲ)→正交结构(HgSe-Ⅳ), 相变压力分别为1.1,15.1,40.1 GPa.

关键词: 高压, 第一性原理计算, 相变, 光学性质

Abstract:

An investigation on the structural stabilities and electronic properties of HgSe under high pressure was conducted via first\|principles calculations based on density functional theory. Our results demonstrate that the sequence of the pressure\|induced phase transition of HgSe is from the zinicblende structure (HgSe-Ⅰ) to the cinnabar structure (HgSe-Ⅱ) to the rocksalt structure (HgSe-Ⅲ), and then to orthorhombic structure (HgSe-Ⅳ). The phase transition pressures are 1.1, 15.1 and 40.1 GPa. The calculated results of optical properties show the positions of excited peaks. 

Key words: high pressure, first-principles calculations, phase transition, optical property

中图分类号: 

  • TB303