Antiferromagnetic quantum critical point in CeRhIn5-xSnx

Abstract Measurements of magnetic susceptibility, specific heat, and electrical resistivity have been performed on single crystals of CeRhIn 5 - x Sn x . The antiferromagnetic order at T N = 3.8 K that occurs in the heavy-fermion pressure-induced superconductor CeRhIn 5 is suppressed by Sn substitution at a critical concentration x c ∼ 0.35 . Non-Fermi liquid behavior is observed in the vicinity of x c suggesting an antiferromagnetic quantum critical point. The evolution of the antiferromagnetic order, a Schottky anomaly centered around 3 K attributed to short-range magnetic correlations, and non-Fermi liquid behavior in CeRhIn 5 - x Sn x indicates a localized/itinerant crossover of the Ce f electrons, similar to the one that occurs in CeRhIn 5 at applied pressure.