Critical conductance of a one-dimensional doped Mott insulator

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dc.creatorGarst, M.
dc.creatorNovikov, D. S.
dc.creatorStern, Ady
dc.creatorGlazman, L. I.
dc.date2007-08-03
dc.date2008-01-23
dc.date.accessioned2026-07-07T08:55:44Z
dc.date.available2026-07-07T08:55:44Z
dc.descriptionWe consider the two-terminal conductance of a one-dimensional Mott insulator undergoing the commensurate-incommensurate quantum phase transition to a conducting state. We treat the leads as Luttinger liquids. At a specific value of compressibility of the leads, corresponding to the Luther-Emery point, the conductance can be described in terms of the free propagation of non-interacting fermions with charge e/\sqrt{2}. At that point, the temperature dependence of the conductance across the quantum phase transition is described by a Fermi function. The deviation from the Luther-Emery point in the leads changes the temperature dependence qualitatively. In the metallic state, the low-temperature conductance is determined by the properties of the leads, and is described by the conventional Luttinger liquid theory. In the insulating state, conductance occurs via activation of e/\sqrt{2} charges, and is independent of the Luttinger liquid compressibility.
dc.description13 pages, 3 figures. Published version
dc.identifierhttps://arxiv.org/abs/0708.0545
dc.identifierhttp://arxiv.org/abs/0708.0545
dc.identifierPhys. Rev. B 77, 035128 (2008)
dc.identifierdoi:10.1103/PhysRevB.77.035128
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/146371
dc.subjectMesoscale and Nanoscale Physics
dc.subjectStrongly Correlated Electrons
dc.titleCritical conductance of a one-dimensional doped Mott insulator
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