Spin fluctuations in the skutterudite compound LaFe4Sb12
R Viennois, S Charar, D Ravot, P Haen… - The European Physical …, 2005 - Springer
The European Physical Journal B-Condensed Matter and Complex Systems, 2005•Springer
We report transport, magnetic and thermodynamic properties of the skutterudite compound
LaFe 4 Sb 12. The basic features are a large magnetic susceptibility χ (T), and large
electronic coefficient γ of the heat capacity. In particular, a T 1.35, T 1.7, and T-2/3
temperature dependence of the magnetic susceptibility χ (T), resistivity ρ (T), and Grüneisen
parameter Γ (T), respectively, is found at low temperature. An overall understanding of these
physical properties is achieved, assuming that LaFe 4 Sb 12 is a non-Fermi liquid system …
LaFe 4 Sb 12. The basic features are a large magnetic susceptibility χ (T), and large
electronic coefficient γ of the heat capacity. In particular, a T 1.35, T 1.7, and T-2/3
temperature dependence of the magnetic susceptibility χ (T), resistivity ρ (T), and Grüneisen
parameter Γ (T), respectively, is found at low temperature. An overall understanding of these
physical properties is achieved, assuming that LaFe 4 Sb 12 is a non-Fermi liquid system …
Abstract
We report transport, magnetic and thermodynamic properties of the skutterudite compound LaFe4Sb12. The basic features are a large magnetic susceptibility χ(T), and large electronic coefficient γ of the heat capacity. In particular, a T1.35, T1.7, and T-2/3 temperature dependence of the magnetic susceptibility χ(T), resistivity ρ(T), and Grüneisen parameter Γ(T), respectively, is found at low temperature. An overall understanding of these physical properties is achieved, assuming that LaFe4Sb12 is a non-Fermi liquid system close to a ferromagnetic quantum critical point, with a spin fluctuation temperature Tsf=50±15 K.
Springer
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