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

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)

Abstract

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.

Original languageEnglish
Article number117203
JournalPhysical review letters
Volume124
Issue number11
DOIs
Publication statusPublished - 2020 Mar 20

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

Fingerprint Dive into the research topics of 'Quantum Critical Point in the Itinerant Ferromagnet Ni1-xRhx'. Together they form a unique fingerprint.

Cite this