Evolution of quantum criticality in the system CeNi<sub>9</sub>Ge<sub>4</sub>
Evolution of quantum criticality in the system CeNi<sub>9</sub>Ge<sub>4</sub>
The heavy fermion system CeNi9Ge4 exhibits a paramagnetic ground state with remarkable features such as: a record value of the electronic specific heat coefficient in systems with a paramagnetic ground state, \gamma = C/T \simeq 5.5 J/molK^2 at 80 mK, a temperature-dependent Sommerfeld-Wilson ratio, R=\chi/\gamma, below 1 K and an …