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arXiv · 1102.1371

Four-terminal resistance of an interacting quantum wire with weakly invasive contacts

Hugo Aita·Liliana Arrachea·Carlos Naón
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Abstract

We analyze the behavior of the four-terminal resistance, relative to the two-terminal resistance of an interacting quantum wire with an impurity, taking into account the invasiveness of the voltage probes. We consider a one-dimensional Luttinger model of spinless fermions for the wire. We treat the coupling to the voltage probes perturbatively, within the framework of non-equilibrium Green function techniques. Our investigation unveils the combined effect of impurities, electron-electron interactions and invasiveness of the probes on the possible occurrence of negative resistance.

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Hugo Aita, Liliana Arrachea, Carlos Naón. 2011-11-21. Four-terminal resistance of an interacting quantum wire with weakly invasive contacts. https://doi.org/10.1088/0953-8984%2F23%2F47%2F473201

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