Transport characteristics of nanojunctions far-from-equilibrium

Details Transport characteristics of nanojunctions far-from-equilibrium Transport characteristics of nanojunctions far-from-equilibrium

2012-04-23

arxiv.org/abs/1204.5219v1

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

6 pages, 6 figures, revtex4

Scientific paper

We study the tunneling transport through a nanojunction in the far-from-equilibrium regime at relatively low temperatures. We show that the current-voltage characteristics is significantly modified as compared to the usual quasi-equilibrium result by lifting the suppression due to the Coulomb blockade. These effects are important in realistic nanojunctions. We study the high-impedance case in detail to explain the underlying physics and construct a more realistic theoretical model for the case of a metallic junction taking into account dynamic Coulomb interaction. This dynamic screening further reduces the effect of the Coulomb blockade.

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