Zero-field ambient-pressure quantum criticality in the stoichiometric non-fermi liquid system cerhbi

Vivek K. Anand, Devashibhai T. Adroja, Adrian D. Hillier, Keisuke Shigetoh, Toshiro Takabatake, Je Geun Park, Keith A. McEwen, Jedediah H. Pixley, Qimiao Si

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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.

Original languageEnglish (US)
Article number064708
JournalJournal of the Physical Society of Japan
Volume87
Issue number6
DOIs
StatePublished - 2018

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

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