2014/06/09 by V. V. Afonin, Afonin, V. V., V. Petrov +1
Physics and Astronomy · Engineering · Chemistry · #Quantum and electron transport phenomena #Molecular Junctions and Nanostructures #Advanced Physical and Chemical Molecular Interactions
paper · pdf · doi:10.48550/arxiv.1406.2297
We show that conductance of 1D channel with one point-like impurity critically depends on asymptotic behavior of e-e interaction at small momenta k (about inverse length of a channel). Conductance reemerges (contrary to the case of point-like repulsive potential) if potential V(k=0)= 0. For example, this happens if the bare e-e interaction is screened by the charges in the bulk. The relation of this phenomena to the long-range order present in the Luttinger model is discussed.