MODELING OF ELECTRON TRANSPORT IN A ONE-DIMENSIONAL TIGHT-BINDING FULLERENES CHAIN

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.