Possible low-temperature strongly correlated electron behavior from multipole fluctuations in PrMg3 with cubic non-kramers Γ3 doublet ground state

Hiroshi Tanida, Hiroyuki S. Suzuki, Shigeru Takagi, Hideya Onodera, Katsumi Tanigaki

Research output: Contribution to journalArticlepeer-review

59 Citations (Scopus)

Abstract

The magnetic and thermodynamic properties of PrMg3 single crystals were investigated based on the magnetic susceptibility χ(T) and the specific heat CP(T). An observed broad anomaly in CP(T) with a peak ∼1.8 J/(mol K) at 0.9 K, together with Van-Vleck-like behavior of χ(T), indicates that the low-T properties are ascribed to the multipole (quadrupole O20 and O22, and octupole Txyz) degrees of freedom of a nonmagnetic, non-Kramers Γ3 doublet ground state in the cubic crystalline electric field of Pr3+. The low-T CP(T) anomaly, however, is not described in terms of the two-channel Kondo model, but is more similar to that for the single-channel Kondo model with the Kondo temperature TK = 1.3 K, including its weak external-field dependence. No evidence for a cooperative phase transition was detected down to 0.54K in CP(T), suggesting that the Γ3 multipole degrees of freedom are quenched at low T by forming a strongly correlated electronic state through the hybridization with conduction electrons.

Original languageEnglish
Article number073705
Journaljournal of the physical society of japan
Volume75
Issue number7
DOIs
Publication statusPublished - 2006 Jul 1

Keywords

  • Heavy electron
  • Kondo effect
  • Octupole
  • Pr compounds
  • PrMg
  • Quadrupole

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Fingerprint Dive into the research topics of 'Possible low-temperature strongly correlated electron behavior from multipole fluctuations in PrMg<sub>3</sub> with cubic non-kramers Γ<sub>3</sub> doublet ground state'. Together they form a unique fingerprint.

Cite this