Tunneling of Interacting Fermions in 1D Systems |
A. Gendiar, M. Moško, P. Vagner and R. Németh
Institute of Electrical Engineering, Slovak Academy of Sciences, Dúbravská cesta 9, 841 04 Bratislava, Slovakia |
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Received: 4 06 2005; |
Using the self-consistent Hartree-Fock approximation for spinless electrons at zero temperature, we study tunneling of the interacting electron gas through a singleδ barrier in a finite one-dimensional wire connected to contacts. Our results exhibit features known from correlated many-body models. In particular, the conductance decays with the wire length as ∝ L^{-2α}, where the power α is universal. We also show that a similar result for a wire conductance can be extracted from the persistent current (I) through the δ barrier in a one-dimensional ring, where it is known that I∝ L^{-1-α}. |
DOI: 10.12693/APhysPolA.108.661 PACS numbers:73.23.-b, 73.61.Ey |