Magnetic field induced non-Fermi liquid to Fermi liquid crossover at the quantum critical point of YbCu${}_{5-x}$Au${}_x$

P. Carretta, R. Pasero, M. Giovannini +1

The temperature (T) dependence of the muon and ${}^{63}$Cu nuclear spin-lattice relaxation rates $1/T_1$ in YbCu4.4Au0.6 is reported over nearly four decades. It is shown that for $T…