摘要
利用基于密度泛函理论(DFT)的广义梯度近似(GGA)研究了NaB r的电子结构和光学性质,给出了其沿布里渊区高对称轴的能带结构、态密度(DOS)和分态密度(PDOS).并计算了介电函数ε(ω),反射率R(ω),能量损失函数L(ω),光吸收系数I(ω),光导率σ(ω),折射率n(ω),以及消光系数k(ω),用以讨论NaB r的光学性质.
The electronic structure and optical properties of sodium bromide (NaBr) are investigated by the density functional theory (DFT) with the generalized gradient approximation (GGA) for the exchange and correlation energy. The band structure along the higher symmetry axes in the Brillouin zone, the density of states (DOS) and the partial density of states (PDOS) are presented. The dielectric function ε(ω), the reflectivity R (ω), the energy-loss function L(ω), the optical absorption coefficient I (to), the optical conductivity σ ( ω ), the refractive index n (ω) and the extinction coefficient k ( ω ), were calculated for discussing the optical properties of NaBr.
出处
《湖南师范大学自然科学学报》
CAS
北大核心
2009年第4期32-36,共5页
Journal of Natural Science of Hunan Normal University
基金
国家自然科学基金资助项目(50474051)
关键词
NABR
密度泛函理论
电子结构
光学性质
NaBr
density functional theory
electronic structure
ootieal orooerties