The Temperature Dependent Electron Transport Studies in a Molecular Device
نویسندگان
چکیده
The quantum transport through Tour Wires (TWs) was studied at room temperature and high temperature range using nonequilibrium Green’s function (NEGF) formalism combined with extended Huckel theory (EHT). AuTour Wire-Au junctions were constructed with functional groups NO2 and NH2.The influence of the temperature effect on the transport characteristics have been emphasized, and the result shows that for the TW and TW-NH2 systems conductance increase with increasing temperature indicating the dominating transport mechanism which is due to thermionic emission. The temperature dependence arises not only from thermal spreading in the leads but also from a thermal average over different contact configuration. In particular, negative differential resistance nature was observed for TW-NO2 at the temperature of 100K in the positive and the negative bias region.
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