Abstract
We report measurements of the specific heat, electrical resistivity, and magnetic susceptibility for CePt1−xNixSi2 from which we develop a T − x phase diagram that includes a quantum critical point near xcr ≈ 0.125 and accompanying non-Fermi-liquid behavior in a "v"-shaped region. This phase diagram is strikingly similar to that of CePtSi2 under applied pressure P, suggesting that CePt1−xNixSi2 provides a model system in which a T − P − x phase diagram can be smoothly generated, thereby allowing a systematic study of the influence of disorder on quantum criticality.
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