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We present a detailed specific heat study of the CeNi$_{1-x}$Cu$_{x}$seriesin a large temperature range of 0.2 K to 300 K. The analysis of these data,considering also previous neutron scattering, magnetic characterization and$\mu$SR results, allows us to present a convenient description of the system asinhomogeneous on the nanometric scale. Two regimes are detected in thecompositional range depending on the dominant RKKY or Kondo interactions. Wepropose that the long-range magnetic order at low temperatures is achieved by apercolative process of magnetic clusters that become static below the freezingtemperature $T_{f}$. In this scenario the existence of a Quantum Critical Pointat the magnetic-nonmagnetic crossover must be discarded.Comment: 13 pages, 12 figures, submitted to Phys. Rev.

physical review. b, condensed matter and materials physics

Magnetic ground state of<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:mi mathvariant="normal">Ce</mml:mi><mml:msub><mml:mi mathvariant="normal">Ni</mml:mi><mml:mrow><mml:mn>1</mml:mn><mml:mo>−</mml:mo><mml:mi>x</mml:mi></mml:mrow></mml:msub><mml:msub><mml:mi mathvariant="normal">Cu</mml:mi><mml:mi>x</mml:mi></mml:msub></mml:mrow></mml:math>: A calorimetric investigation

Magnetic ground state ofCeNi1−xCux: A calorimetric investigation