Heavy-fermion quantum critical point behavior in CeNi9Ge4

We report on non-Fermi liquid features observed for CeNi9Ge4 - a novel stoichiometric compound, which is close to the heavy-fermion quantum critical point. The specific heat measured down to 80 mK reveals an almost logarithmic divergence of the low-temperature contribution yielding an extraordinaril...

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Bibliographic Details
Published in:Journal of magnetism and magnetic materials 2004-05, Vol.272-276, p.227-228
Main Authors: Michor, H, Bauer, E, Dusek, C, Hilscher, G, Rogl, P, Chevalier, B, Etourneau, J, Giester, G, Killer, U, Scheidt, E.-W
Format: Article
Language:English
Subjects:
Chemical Sciences
Material chemistry
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Summary:We report on non-Fermi liquid features observed for CeNi9Ge4 - a novel stoichiometric compound, which is close to the heavy-fermion quantum critical point. The specific heat measured down to 80 mK reveals an almost logarithmic divergence of the low-temperature contribution yielding an extraordinarily large Sommerfeld value *g exceeding 6 J/mol K2. The application of external magnetic fields recovers a conventional Fermi-liquid state.
ISSN:0304-8853
1873-4766
DOI:10.1016/j.jmmm.2003.12.675