Thermal and electronic transport in CeRu2Al10: Evidence for a metal-insulator transition

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Abstract

A first report of physical properties of the ternary intermetallic compound CeRu2Al10 is given. The electrical resistivity below room temperature shows activated behaviour with a narrow gap of Δ ≃ 20 K before the onset of a sharp peak in ρ (T) below T = 27 K. The Hall coefficient as well as the thermoelectric power are overall positive, and both increase in a similarly sharp manner below T. The lattice part of the thermal conductivity indicates phonon coupling of the heat transport at T, possibly underlying a lattice transformation that accompanies the putative metal-to-insulator and magnetic phase transitions.

Original languageEnglish
Pages (from-to)2981-2984
Number of pages4
JournalPhysica B: Condensed Matter
Volume404
Issue number19
DOIs
Publication statusPublished - 15 Oct 2009

Keywords

  • Electrical resistivity
  • Strongly correlated electron systems
  • Thermal conductivity

ASJC Scopus subject areas

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

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