Browsing by Author "Huang, Zhifeng"

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Measurement of current-induced local heating in a single molecule junction
(2006-06-01)
Huang, Zhifeng
;
Xu, Bingqian
;
Chen, Yuchang
;
Di Ventra, Massimiliano
;
Tao, Nongjian
We have studied the current-induced local heating effects in single molecules covalently bound to two electrodes by measuring the force required to break the molecule-electrode bonds under various conditions. The breakdown process is thermally activated, which is used to extract the effective temperature of the molecular junction as a function of applied bias voltage. We have also performed first-principles calculations of both local heating and current-induced force effects, and the results are in good agreement with the experimental findings.