Shot noise free conductance reduction in quantum wires

Details Shot noise free conductance reduction in quantum wires Shot noise free conductance reduction in quantum wires

2005-06-17

arxiv.org/abs/cond-mat/0506455v1

Phys. Rev. B 74, 125309 (2006)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

4 pages, 1 figure

Scientific paper

We show that a shot noise free current at conductance below 2 e^2/h is possible in short interacting quantum wires without spin-polarization. Our calculation is done for two exactly solvable limits of the ``Coulomb Tonks gas'', a one-dimensional gas of impenetrable electrons that can be realized in ultra-thin quantum wires. In both cases we find that charge transport through such a wire is noiseless at zero temperature while the conductance is reduced to e^2/h.

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