Quantum Critical Point in the Itinerant Ferromagnet Ni1-xRhx

C. L. Huang, A. M. Hallas, K. Grube, S. Kuntz, B. Spieß, K. Bayliff, T. Besara, T. Siegrist, Y. Cai, J. Beare, G. M. Luke, E. Morosan

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1 引文 斯高帕斯(Scopus)

摘要

We report a chemical substitution-induced ferromagnetic quantum critical point in polycrystalline Ni1-xRhx alloys. Through magnetization and muon spin relaxation measurements, we show that the ferromagnetic ordering temperature is suppressed continuously to zero at xcrit=0.375 while the magnetic volume fraction remains 100% up to xcrit, pointing to a second order transition. Non-Fermi liquid behavior is observed close to xcrit, where the electronic specific heat Cel/T diverges logarithmically, while immediately above xcrit the volume thermal expansion coefficient αV/T and the Grüneisen ratio Γ=αV/Cel both diverge logarithmically in the low temperature limit, further indication of a ferromagnetic quantum critical point in Ni1-xRhx.

原文English
文章編號117203
期刊Physical review letters
124
發行號11
DOIs
出版狀態Published - 2020 三月 20

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

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