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arXiv · 0711.3638

Voltage profile and four terminal resistance of an interacting quantum wire

Liliana Arrachea·Carlos Naón·Mariano Salvay
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Abstract

We investigate the behavior of the four-terminal resistance $R_{4pt}$ in a quantum wire described by a Luttinger liquid in two relevant situations: (i) in the presence of a single impurity within the wire and (ii) under the effect of asymmetries introduced by dirty voltage probes. In the first case, interactions leave a signature in a power law behavior of $R_{4pt}$ as a function of the voltage $V$ and the temperature $T$. In the second case interactions tend to mask the effect of the asymmetries. In both scenarios the occurrence of negative values of $R_{4pt}$ is explained in simple terms.

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Liliana Arrachea, Carlos Naón, Mariano Salvay. 2008-03-07. Voltage profile and four terminal resistance of an interacting quantum wire. https://doi.org/10.1103/physrevb.77.233105

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