Transport through quasi-ballistic quantum wires: the role of contacts

Details Transport through quasi-ballistic quantum wires: the role of contacts Transport through quasi-ballistic quantum wires: the role of contacts

2000-12-07

arxiv.org/abs/cond-mat/0012097v2

Phys. Rev. Lett. 87 (2001) 026801

Physics

Condensed Matter

Strongly Correlated Electrons

revtex, 5 pages, 1 eps figure; clarifications added in light of new experiments

Scientific paper

10.1103/PhysRevLett.87.026801

We model one-dimensional transport through each open channel of a quantum wire by a Luttinger liquid with three different interaction parameters for the leads, the contact regions and the wire, and with two barriers at the contacts. We show that this model explains several features of recent experiments, such as the flat conductance plateaux observed even at finite temperatures and for different lengths, and universal conductance corrections in different channels. We discuss the possibility of seeing resonance-like structures of a fully open channel at very low temperatures.

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