Disordered AlAs wires: Temperature-dependent resonance areas within the Fermi-liquid paradigm

J. Moser*, S. Roddaro, D. Schuh, M. Bichler, V. Pellegrini, M. Grayson

*Corresponding author for this work

Research output: Contribution to journalArticle

12 Scopus citations

Abstract

AlAs cleaved-edge overgrown quantum wires near pinch-off reveal conductance resonances with an unconventional dependence on temperature T. The resonance areas decrease with reduced T consistent with classical Coulomb blockade (CB) in a single dot, but then become rapidly smaller below a crossover TX. Though resembling Luttinger liquid behavior below the crossover, the anomalous T dependence including the crossover fit quantitatively to a classical-to- stochastic CB transition, whereby stochastic multidot CB sets in at low temperatures. Conductance at finite bias resembles a depinned charge density wave as expected for a chain of disorder induced dots. These studies highlight the applicability of the Fermi liquid paradigm to the description of disordered heavy-mass quantum wires.

Original languageEnglish (US)
Article number193307
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume74
Issue number19
DOIs
StatePublished - Nov 15 2006

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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