期刊
PHYSICAL REVIEW B
卷 75, 期 24, 页码 -出版社
AMERICAN PHYSICAL SOC
DOI: 10.1103/PhysRevB.75.241103
关键词
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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.
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