Evidence for a field-independent enhancement factor in the real tunneling potential barrier of nanotube emitters
2023 IEEE 36TH INTERNATIONAL VACUUM NANOELECTRONICS CONFERENCE, IVNC(2023)
摘要
We have demonstrated evidence that: (a) a constant characteristic induced field enhancement factor (FEF) can be determined from ab initio density functional theory (DFT) calculations on carbon nanotubes; and (b) this FEF adequately describes the real tunneling barrier. We have confirmed this finding in capped (6,6) armchair, (10,0) zigzag and (10,5) single walled carbon nanotubes (SWCNTs). In all these cases, we have verified that the characteristic local induced field enhancement factor (LIFEF) does not significantly depend on the macroscopic applied field. This establishes the LIFEF as a field-independent characterization parameter for nano-emitters.
更多查看译文
关键词
Induced Field Enhancement Factor, Tunneling Barrier, Density Functional Theory, Carbon Nanotubes
AI 理解论文
溯源树
样例
生成溯源树,研究论文发展脉络
Chat Paper
正在生成论文摘要