摘要
利用含时密度泛函理论(time-dependent density functional theory(TDDFT)),研究了锑烯纳米结构表面等离激元的激发特性,并给出了微扰场沿着扶手椅边界和Z字边界激发时锑烯纳米结构的吸收光谱.结果表明沿不同的方向激发,吸收光谱不同.距锑烯纳米结构表面0.9处的能量共振点的电荷密度分布表明,在低能共振区,等离激元共振属于键合二聚体的等离激元模式(BDP).
The excitation characteristics of surface plamons of the antimonene nanostructure was studied by time-dependent density functional theory (TDDFT). The absorption spectra were given for impulse excitations polarized in the armchair-edge direction (X-axis) and zigzag-edge direction (Y-axis). The edge configuration effects the absorption spectrum. The distribution of indued charge infers the main plasmon resonance modes are the bonding dimer plasmon mode(BDP) in the low-energy resonance re- gion.
出处
《四川大学学报(自然科学版)》
CAS
CSCD
北大核心
2018年第1期125-128,共4页
Journal of Sichuan University(Natural Science Edition)
基金
国家自然科学基金(11474207
11374217)
乐山市科学技术局重点研究项目(16GZD040)
关键词
锑烯
纳米结构
表面等离激元
合时密度泛函理论
吸收光谱
Antimonene
Nanostrcture
Surrface plasmon
Time-dependent density functional theory(TDDFT)
Absorption spectrum