Magnetic field induced effects in the quasikagome Kondo lattice system CePtPb

A. C.Y. Fang, S. R. Dunsiger, A. Pal, K. Akintola, J. E. Sonier, E. Mun

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3 Citations (Scopus)


The Kondo lattice compound CePtPb crystallizes in the ZrNiAl-type structure with the space group P62m, where the Ce3+ ions form a quasikagome lattice in the ab plane. We have constructed a temperature versus magnetic field (T-H) phase diagram for single-crystal CePtPb from electrical resistivity and specific heat measurements. Our results indicate the occurrence of long-range antiferromagnetic order below TN=0.95K and multiple magnetically ordered phases as TN is suppressed by applied magnetic field. Although TN can be continuously suppressed to zero by the field, the resistivity and specific heat close to the critical field Hc≈6 kOe do not follow simple models of quantum criticality. Above Hc, the electrical resistivity shows an unconventional Tn dependence with n>2. We also present muon spin relaxation measurements, which reveal residual spin dynamics below TN that are consistent with only two thirds of the Ce-4f spins participating in the antiferromagnetic order.

Original languageEnglish
Article number024404
JournalPhysical Review B
Issue number2
Publication statusPublished - 02-07-2019

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics


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