Atomic Resolution Imaging of Currents in Nanoscopic Quantum Networks via Scanning Tunneling Microscopy

被引：7
|
作者：
Can, Tankut [1 ,2 ]
Morr, Dirk K. [1 ,2 ,3 ]
机构：
[1] Univ Chicago, Dept Phys, Chicago, IL 60637 USA
[2] Univ Chicago, James Franck Inst, Chicago, IL 60637 USA
[3] Univ Illinois, Chicago, IL 60607 USA
来源：
PHYSICAL REVIEW LETTERS | 2013年 / 110卷 / 08期
关键词：
ELECTRON-TRANSPORT; POINT-CONTACT; BRANCHED FLOW; CONDUCTORS; NANOSCALE; DEVICES; SCALE;
D O I：
10.1103/PhysRevLett.110.086802
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
We propose a new method for atomic-scale imaging of spatial current patterns in nanoscopic quantum networks by using scanning tunneling microscopy (STM). By measuring the current flowing from the STM tip into one of the leads attached to the network as a function of tip position, one obtains an atomically resolved spatial image of "current riverbeds" whose spatial structure reflects the coherent flow of electrons out of equilibrium. We show that this method can be successfully applied in a variety of network topologies and is robust against dephasing effects. DOI: 10.1103/PhysRevLett.110.086802
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收藏
页数：5
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