Effect of impurity pinning on conduction and specific heat in the Luttinger liquid

S. N. Artemenko, S. V. Remizov, D. S. Shapiro, R. R. Vakhitov

Research output: Contribution to journalArticlepeer-review

4 Citations (Scopus)

Abstract

We study theoretically two effects related to impurity depinning that are common for 1D Luttinger liquid (LL) and linear-chain charge-density wave (CDW) conductors. First, we consider the electron transport through a single impurity in a 1D conducting channel and study a new regime of conduction related to LL sliding at voltage above a threshold one. The DC current in this regime is accompanied by oscillations with frequency f = I / e. This resembles the CDW depinning in linear-chain conductors, the Josephson effect, and the Coulomb blockade. Second, we found that strong pinning of the LL by impurities leads to a magnetic field dependence of the low-temperature specific heat similar to that observed experimentally in CDW compounds. We interpret this in favor of possibility of formation of the LL in linear-chain compounds.

Original languageEnglish
Pages (from-to)447-451
Number of pages5
JournalPhysica B: Condensed Matter
Volume404
Issue number3-4
DOIs
Publication statusPublished - 13 Jan 2009

Keywords

  • Conduction
  • Heat capacity
  • Impurity
  • Luttinger liquid

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Electrical and Electronic Engineering

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