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

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≃20K before the onset of a sharp peak in ρ(T) below T*=27K. The Hall coefficient as well as the thermoelec...

Full description

Saved in:
Bibliographic Details
Published in:Physica. B, Condensed matter Condensed matter, 2009-10, Vol.404 (19), p.2981-2984
Main Author: Strydom, A.M.
Format: Article
Language:English
Subjects:
Condensed matter: electronic structure, electrical, magnetic, and optical properties
Electrical resistivity
Electron states
Exact sciences and technology
Metal-insulator transitions and other electronic transitions
Physics
Strongly correlated electron systems
Strongly correlated systems
heavy fermions
Thermal conductivity
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary: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≃20K before the onset of a sharp peak in ρ(T) below T*=27K. 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.
ISSN:0921-4526
1873-2135
DOI:10.1016/j.physb.2009.07.044