Quantum Critical Point in the Itinerant Ferromagnet Ni_{1-x}Rh_{x}.

Journal

Physical review letters
ISSN: 1079-7114
Titre abrégé: Phys Rev Lett
Pays: United States
ID NLM: 0401141

Informations de publication

Date de publication:
20 Mar 2020
Historique:
received: 15 01 2020
accepted: 26 02 2020
entrez: 4 4 2020
pubmed: 4 4 2020
medline: 4 4 2020
Statut: ppublish

Résumé

We report a chemical substitution-induced ferromagnetic quantum critical point in polycrystalline Ni_{1-x}Rh_{x} alloys. Through magnetization and muon spin relaxation measurements, we show that the ferromagnetic ordering temperature is suppressed continuously to zero at x_{crit}=0.375 while the magnetic volume fraction remains 100% up to x_{crit}, pointing to a second order transition. Non-Fermi liquid behavior is observed close to x_{crit}, where the electronic specific heat C_{el}/T diverges logarithmically, while immediately above x_{crit} the volume thermal expansion coefficient α_{V}/T and the Grüneisen ratio Γ=α_{V}/C_{el} both diverge logarithmically in the low temperature limit, further indication of a ferromagnetic quantum critical point in Ni_{1-x}Rh_{x}.

Identifiants

DOI: 10.1103/PhysRevLett.124.117203 PMID: 32242686
pubmed: 32242686
doi: 10.1103/PhysRevLett.124.117203
doi:

Types de publication

Journal Article

Langues

eng

Sous-ensembles de citation

IM

Pagination

117203

Auteurs

C-L Huang (CL)

Department of Physics and Astronomy, Rice University, Houston, Texas 77005, USA.

A M Hallas (AM)

Department of Physics and Astronomy, Rice University, Houston, Texas 77005, USA.
Department of Physics and Astronomy and Quantum Matter Institute, University of British Columbia, Vancouver, British Columbia V6T 1Z1, Canada.

K Grube (K)

Institute for Quantum Materials and Technologies, 76021 Karlsruhe, Germany.

S Kuntz (S)

Institute for Quantum Materials and Technologies, 76021 Karlsruhe, Germany.

B Spieß (B)

Department of Physics and Astronomy, Rice University, Houston, Texas 77005, USA.
Department of Chemistry, Johannes Gutenberg-University Mainz, 55131 Mainz, Germany.

K Bayliff (K)

Department of Chemistry, Rice University, Houston, Texas 77005, USA.

T Besara (T)

National High Magnetic Field Laboratory, Tallahassee, Florida 32310, USA.
Department of Physics, Astronomy, and Materials Science, Missouri State University, Springfield, Missouri 65897, USA.

T Siegrist (T)

National High Magnetic Field Laboratory, Tallahassee, Florida 32310, USA.
FAMU-FSU College of Engineering, Tallahassee, Florida 32310, USA.

Y Cai (Y)

Department of Physics and Astronomy, McMaster University, Hamilton, Ontario L8S 4M1, Canada.

J Beare (J)

Department of Physics and Astronomy, McMaster University, Hamilton, Ontario L8S 4M1, Canada.

G M Luke (GM)

Department of Physics and Astronomy, McMaster University, Hamilton, Ontario L8S 4M1, Canada.
TRIUMF, 4004 Wesbrook Mall, Vancouver, British Columbia V6T 2A3, Canada.

E Morosan (E)

Department of Physics and Astronomy, Rice University, Houston, Texas 77005, USA.

Classifications MeSH