• 文献标题:   Electron transport in ladder-shaped graphene cuts
  • 文献类型:   Article
  • 作  者:   MEHRI A, JAMAATI M
  • 作者关键词:   laddershaped graphene cut, electron transport, nonequilibrium green s function
  • 出版物名称:   COMPUTATIONAL MATERIALS SCIENCE
  • ISSN:   0927-0256 EI 1879-0801
  • 通讯作者地址:   Babol Noshirvani Univ Technol
  • 被引频次:   3
  • DOI:   10.1016/j.commatsci.2018.11.037
  • 出版年:   2019

▎ 摘  要

We numerically investigate electrical conductance of ladder-shaped graphene cuts (LGCs). Our calculations are performed by using non-equilibrium Green's function method, in the nearest neighbor tight binding approximation. Our findings reveal strong sensitivity of electron transport through side rails of LGC to number, length and width of its rungs. Adding more rungs to ladder destroys the transport process in side rails. By lengthening the rungs transmission increases and finally tends to a constant value. Rungs widening has also destructive effect on electron transport via side rails. The results show that the transport properties of the LGC could be tuned via changing its structure, to discover transition from metal to insulator and vice versa. We also find that, lengthening of the ladder decreases transport along its side rails.