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摘要
The electron transport through a single molecular conductor consisting of an azopyridine (AZP) sandwiched between Au electrodes has been investigated using the nonequilibrium Green's function formalism combined with the DFT method. We show that when AZP converts between its trans and cis conformations, this simple molecular device switches between a strongly and a wealdy conducting state. We also found that the trans isomer can exhibit novel NDR behavior which can be used as the basis of memory, switching and logic functionality. The switching behavior and NDR characteristic are rationalized by analyzing the device transmission coefficients and electronic structures.
- 出版日期2012-12
