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Transport through Quasiballistic Quantum Wires: The Role of Contacts

2000/12/29 by Siddhartha Lal, Sumathi Rao, Diptiman Sen · 24 citations
Engineering · Physics and Astronomy · #Ballistic conduction #Channel (broadcasting) #Condensed matter physics #Conductance #Electron #Luttinger liquid #Materials science #Molecular Junctions and Nanostructures #Physics #Quantum #Quantum and electron transport phenomena #Quantum mechanics #Quantum wire #Simple (philosophy) #Surface and Thin Film Phenomena #cond-mat.mes-hall #cond-mat.str-el

paper · pdf · doi:10.1103/physrevlett.87.026801

published in Physical Review Letters 87(2) (American Physical Society) · revtex, 5 pages, 1 eps figure; clarifications added in light of new experiments

arxiv created 2000/12/29 · openalex publication_date 2001/06/21 · arxiv updated 2009/11/30 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05

Abstract

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

Citations