What is the source of the random increase/decrease in the resistance of a nanowire following a current pulse injection?

04 October 2014 1 170 Report

We injected a current pulse to a nanowire and measured the resistance at the same time. We measured the resistance by depositing gold contact pads and using a probe station. However it seems that the nanowire gave a random response; sometimes the resistance increases and at another time it decreases.

Does anyone know of a possible source of this error? Attached is one of the measured result

Indra Purnama

Hi Behnam, thank you so much for your answer. I have updated the figure. As can be seen, the drop/rise in the resistance come up when a pulse is injected to the nanowire

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