Observation of Anomalous Non-Ohmic Transport in Current-Driven Nanostructures

  title={Observation of Anomalous Non-Ohmic Transport in Current-Driven Nanostructures},
  author={Guanxiong Chen and Ryan Freeman and Andrei Zholud and Sergei Urazhdin},
  journal={arXiv: Mesoscale and Nanoscale Physics},
Sufficiently large electric current applied to metallic nanostructures can bring them far out-of-equilibrium, resulting in non-Ohmic behaviors characterized by current-dependent resistance. We experimentally demonstrate a linear dependence of resistance on current in microscopic thin-film metallic wires at cryogenic temperatures, and show that our results are inconsistent with common non-Ohmic mechanisms such as Joule heating. As the temperature is increased, the linear dependence becomes… 

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