Abstract
We report on electrical resistivity measurements of the antiferromagnetic CeCoGe 2.1Si 0.9 Kondo lattice under hydrostatic pressures, P ∼ 11 kbar . Pressure induces a quantum critical point (QCP) at P C ≈ 6.2 kbar . Around the QCP, the electrical resistivity shows a nearly linear temperature dependence over more than one decade of temperatures, which is associated with a non-Fermi liquid behavior. The pressure dependence of residual resistivity suggests that quantum criticality in our system is controlled mainly by the coexistence between the mechanisms of the spin fluctuations and the Griffiths phase.
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