We study the temperature and field dependence of the magnetic and transport properties of the non-Fermi-liquid compound Ce(Ru_{1-x}Rh_x)_2Si_2 at x=0.5. For fields ≲0.1T the experimental results show signatures of the presence of Kondo-disorder, expected to be large at this concentration. For larger fields, however, magnetic and transport properties are controlled by the coupling of the conduction electrons to critical spin-fluctuations. The temperature dependence of the susceptibility as well as the scaling properties of the magnetoresistance are in very good agreement with the predictions of recent dynamical mean-field theories of Kondo alloys close to a spin-glass quantum critical point.
@article{arxiv.cond-mat/0002357,
title = {Non-Fermi-Liquid Scaling in Ce(Ru_{0.5}Rh_{0.5})_2Si_2},
author = {Y. Tabata and D. R. Grempel and M. Ocio and T. Taniguchi and Y. Miyako},
journal= {arXiv preprint arXiv:cond-mat/0002357},
year = {2009}
}
Comments
4 pages, 4 figures. Improved discussion. To appear in Phys. Rev. Lett