Thermodynamic stability of single molecule junctions
Thermodynamic stability of single molecule junctions
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DOI：
10.1063/1.2939219
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发表时间：
2008-06
影响因子：
4
通讯作者：
M. Tsutsui;K. Shoji;K. Morimoto;M. Taniguchi;T. Kawai
中科院分区：
文献类型：
--
作者：
M. Tsutsui;K. Shoji;K. Morimoto;M. Taniguchi;T. Kawai
在室温真空条件下，利用纳米制造的机械可控断裂结，研究了Au-benzenedithiolate-Au单分子结的热力学稳定性.测得的单分子电导为10.01G0，与位移速度无关。与自然寿命为14.6小时的Au单原子接触相比，分子结表现出长期的耐久性，从器件应用的角度来看，其特性具有巨大的意义。
Thermodynamic stability of Au-benzenedithiolate-Au single molecule junctions is explored at a room temperature in a vacuum by evaluating stretching rate dependence of the contact lifetime down to 0.0006nm∕s using nanofabricated mechanically controllable break junctions. The measured single molecule conductance is ∼0.01G0 irrespective of the displacement speeds. The molecular junctions demonstrate long-term durability compared to Au single atom contacts with natural lifetime of 14.6h, the characteristics of which is of immense significance from the viewpoint of device applications.