Anand, VK; Adroja, DT; Hillier, AD; Shigetoh, K; Takabatake, T; Park, J-G; McEwen, KA; ... Si, Q; + view all Anand, VK; Adroja, DT; Hillier, AD; Shigetoh, K; Takabatake, T; Park, J-G; McEwen, KA; Pixley, JH; Si, Q; - view fewer (2018) Zero-Field Ambient-Pressure Quantum Criticality in the Stoichiometric Non-Fermi Liquid System CeRhBi. Journal of the Physical Society of Japan , 87 (6) , Article 064708. 10.7566/JPSJ.87.064708.

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Abstract

We present the spin dynamics study of a stoichiometric non-Fermi liquid (NFL) system CeRhBi, using low-energy inelastic neutron scattering (INS) and muon spin relaxation (μSR) measurements. It shows evidence for an energy-temperature (E/T) scaling in the INS dynamic response and a time-field (t/Hη) scaling of the μSR asymmetry function indicating a quantum critical behavior in this compound. The E/T scaling reveals a local character of quantum criticality consistent with the power-law divergence of the magnetic susceptibility, logarithmic divergence of the magnetic heat capacity and T-linear resistivity at low temperature. The occurrence of NFL behavior and local criticality over a very wide dynamical range at zero field and ambient pressure without any tuning in this stoichiometric heavy fermion compound is striking, making CeRhBi a model system amenable to in-depth studies for quantum criticality.

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