Low voltage transport through a tunneling barrier in Tomonaga-Luttinger liquid constriction
V. V. Ponomarenko
Abstract
As voltage decreases d.c. condctivity of a Tomonaga-Luttinger liquid wire collapses to a small value determined by the length of the wire and its contacts with the leads. In condition that voltage drop (V) mostly occurs across a tunnel barrier inside the wire the tunneling density of states and, hence, the differential conductivity are shown to exhibit an interference structure resulted from the transition of the Luttinger liquid quasiparticles into free electrons at the exits from the wire. The finite length correction to the scale-invariant V2/g-2 dependence of the conductivity oscillates as a function of voltage with periodicities related to both rigth and left traversal times.
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