INSTITUTO DE FISICA LA PLATA
Unidad Ejecutora - UE
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Invasive probe effects in four terminal resistance of a quantum wire with an impurity
H. AITA; L. ARRACHEA; C. NAÓN
Otro; Autumn College on Non-Equilibrium Quantum Systems; 2011
We have investigated the behaviour of the four-terminal resistance R4pt in an interacting quantum wire in the presence of a back-scattering impurity. In particular, we focused on the effects of the invasiveness of the probes, going further than the leading order in pertubation theory. Analysis of the results are discussed, concerning the possibility of observing a negative 4t-resistance, with emphasis on the role of the e-e interactions.