We have investigated the thermal, transport and magnetic properties of URh1−xRuxGe alloys near the critical concentration xcr=0.38 for the suppression of ferromagnetic order. The Curie temperature vanishes linearly with x and the ordered moment m0 is suppressed in a continuous way. At xcr the specific heat varies as c∼TlnT, the γ-value c/T∣0.5K is maximum and the temperature exponent of the resistivity ρ∼Tn attains a minimum value n=1.2. These observations provide evidence for a ferromagnetic quantum phase transition. Interestingly, the coefficient of thermal expansion and the Gr\"uneisen parameter Γ remain finite at xcr (down to T=1 K), which is at odds with recent scaling results for a metallic quantum critical point.
@article{arxiv.0704.2116,
title = {Ferromagnetic quantum critical point in URhGe doped with Ru},
author = {N. T. Huy and A. Gasparini and J. C. P. Klaasse and A. de Visser and S. Sakarya and N. H. van Dijk},
journal= {arXiv preprint arXiv:0704.2116},
year = {2009}
}