Evolution of conducting channels in metallic atomic contacts under elastic deformation
Evolution of conducting channels in metallic atomic contacts under elastic deformation
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DOI：
10.1103/physrevlett.81.2990
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发表时间：
1998-10-05
影响因子：
8.6
通讯作者：
Agrait, N
中科院分区：
文献类型：
--
作者：
Cuevas, JC;Yeyati, AL;Agrait, N
我们从实验和理论上研究了弹性变形下金属单原子接触电导的演变。 An 等简单金属表现出几乎恒定的电导平台，而 Al 和 Pb 则表现出具有正斜率和负斜率的倾斜平台。它显示了如何根据形成接触的原子的轨道结构来理解这些行为。该分析进一步深入了解金属接触中的电导量子化问题，揭示其原子和电子结构的重要方面。
We investigate both experimentally and theoretically the evolution of conductance in metallic one-atom contacts under elastic deformation. While simple metals like An exhibit almost constant conductance plateaus, Al and Pb show inclined plateaus with positive and negative slopes. It is shown how these behaviors can be understood in terms of the orbital structure of the atoms forming the contact. This analysis provides further insight into the issue of conductance quantization in metallic contacts revealing important aspects of their atomic and electronic structures.