Nonlocal magnetic field-tuned quantum criticality in cubic CeIn3-xSnx (x=0.25)

We show that antiferromagnetism in lightly (≈8%) Sn-doped CeIn3 terminates at a critical field μ0Hc=42±2T. Electrical transport and thermodynamic measurements reveal the effective mass m* not to diverge, suggesting that cubic CeIn3 is representative of a critical spin-density wave (SDW) scenario, unlike the local quantum critical points reported in anisotropic systems such as CeCu6-xAux and YbRh2Si2-xGex. The existence of a maximum in m* at a lower field μ0Hx=30±1T may be interpreted as a field-induced crossover from local moment to SDW behavior as the Néel temperature falls below the Fermi temperature.