TITLE

Fabrication of nanometer-spaced superconducting Pb electrodes

AUTHOR(S)
Kang Luo; Zhen Yao
PUB. DATE
September 2009
SOURCE
Applied Physics Letters;9/14/2009, Vol. 95 Issue 11, p113115
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
We report the fabrication of superconducting Pb electrodes with nanometer-sized separation by using the electromigration technique. Below the superconducting transition temperature, the electrodes show current-voltage characteristics consistent with the tunneling between two superconducting electrodes, which can be well understood within conventional theory of superconductivity. The electrodes can be reversibly switched between the normal and superconducting states by the application of an external magnetic field. These electrodes are suited for electron-transport studies of chemically synthesized nanostructures and the utility is demonstrated by making single-molecule transistors incorporating individual Co-porphyrin molecules.
ACCESSION #
44292242

 

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