Journal of Applied Physical Science International

In this paper, we propose a general formula for the transmission probability for electron transfer through linear nC₂₀(n=6) oligomers sandwiched between two Au electrodes, by assuming linear nC₂₀ as line model. We consider three configurations are (A), (B) and (C), in the configuration (A), the carbon atoms of the two pentagonal rings mutually are coupled together; In the configuration (B) C₂₀ molecules are connected together with coupling atoms of the two adjacent bonds and in configuration (C) the two C₂₀ molecules are connected together by a single C-C bond. We investigated I-V characteristics and the temperature-dependent conductance for the ‘A’, ‘B’ and ‘C’ configurations. It is found that, configuration (A) is a good conductor, while configuration (C) is insulator in the range bias voltage from -2V to 2V.