Preprint article ยท Journal article
Strong enhancement of transport by interaction on contact links
Strong repulsive interactions within a one-dimensional Fermi system in a two-probe configuration normally lead to a reduced off-resonance conductance. We show that if the repulsive interaction extends to the contact regions, a strong increase of the conductance may occur, even for systems where one would expect to find a reduced conductance.
An essential ingredient in our calculations is a momentum-space representation of the leads, which allows a high energy resolution. Furthermore, we demonstrate that these results are independent of the high-energy cutoff and that the relevant scale is set by the Fermi velocity.
Language: | English |
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Year: | 2007 |
ISSN: | 1550235x , 10980121 , 10953795 and 01631829 |
Types: | Preprint article and Journal article |
DOI: | 10.1103/PhysRevB.75.241103 |