论文标题
研究扶手椅类型的双苯基丝带的电子结构
Investigation of the electronic structure of biphenylene ribbons of the armchair type
论文作者
论文摘要
在静态波动的近似中，研究了椅子型双苯基丝带的电子结构。对于绿色函数的傅立叶变换获得了表达式，其极点决定了基本激发的光谱。双苯基丝带的能量光谱表明，宽度为6、9、12、15、18个碳原子的纳米容器处于半导体状态。与双苯基丝带差异电导的结果相比，提出了各种宽度的双苯基丝带电子状态的密度。结果表明，随着双苯基丝带宽度的增加，带隙的宽度呈指数下降。宽度为21个碳原子或更多的丝带处于金属状态。
The electronic structure of chair-type biphenylene ribbons is studied within the framework of the Hubbard Hamiltonian in the approximation of static fluctuations. An expression is obtained for the Fourier transform of the Green's functions, whose poles determine the spectrum of elementary excitations. The energy spectrum of biphenylene ribbons indicates that nanoribbons with a width of 6, 9, 12, 15, 18 carbon atoms are in the semiconductor state. Densities of state of electrons of biphenylene ribbons of various widths are presented in comparison with the results of experimental measurements of differential conductance of biphenylene ribbons. It is shown that the width of the band gap decreases exponentially with an increase in the width of the biphenylene ribbon. Ribbons with a width of 21 carbon atoms or more are in the metallic state.
