Nonlinear conductance of nanowires - A signature of Luttinger liquid effects?
M. Jonson, I. V. Krive, P. Sandstr\"om, and R. I. Shekhter
TL;DR
This paper investigates the nonlinear conductance in gold nanowires, suggesting that the observed superlinear current-voltage behavior at low voltages can be explained by Luttinger-liquid effects related to electron interactions.
Contribution
It provides an analysis linking nonlinear conductance in nanowires to Luttinger-liquid physics, offering a theoretical explanation for experimental observations.
Findings
Superlinear current-voltage behavior at low voltages
Quantized conductance in gold nanowires
Luttinger-liquid effects as an explanation
Abstract
We analyze recent measurements of the room temperature current-voltage characteristics of gold nanowires, whose zero current conductance is quantized in units of . A faster than linear increase of current with voltage was observed at low voltages beginning from V. We analyze the nonlinear behavior in terms of a dynamic Coulomb blockade of conducting modes and show that it may be explained as a Luttinger-liquid effect.
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