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arXiv 0807.4032cond-mat.mes-hall
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分子电子器件中引线费米能级的定制

Tailoring the Fermi level of the leads in molecular-electronic devices

V. M. García-Suárez, C. J. Lambert

摘要:

利用不同材料的电极,研究了分子电子器件中输运性质与费米能级位置的关系。的零偏压传输特性显着依赖于电极的元素组成,即使是非常相似的形状的传输系数。通过使用碱性材料,可以将费米能级从HOMO-LUMO间隙移动到LUMO共振,并显著改变分子导线电导的长度依赖性,这开启了在纳米级电路中使用具有不同长度和非常相似电导的分子的可能性。这种方法显示了如何显着增加分子器件的电导,并定性和定量地改变其电子和输运性质。

英文摘要:

The dependence of the transport properties on the specific location of the Fermi level in molecular electronics devices is studied by using electrodes of different materials. The zero-bias transport properties are shown to depend dramatically on the elemental composition of the electrodes, even though the shape of the transmission coefficients is very similar. By using alkaline materials it is possible to move the Fermi level from the HOMO-LUMO gap to the LUMO resonance and change dramatically the length dependence of the conductance of molecular wires, which opens the possibility of using molecules with different lengths and very similar conductances in nanoscale circuits. This method shows how to dramatically increase the conductance of molecular devices and alter qualitatively and quantitatively their electronic and transport properties.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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