Journal article

Non-Fermi-liquid behavior in cubic phase BaRuO₃: A dynamical mean-field study

  • Huang, Li Science and Technology on Surface Physics and Chemistry Laboratory, Mianyang, Sichuan, China - Beijing National Laboratory for Condensed Matter Physics, and Institute of Physics, Chinese Academy of Sciences, Beijing, China - Department of Physics, University of Fribourg, Switzerland
  • Ao, Bingyun Science and Technology on Surface Physics and Chemistry Laboratory, Mianyang, Sichuan, China
    29.04.2013
Published in:
  • Physical Review B. - 2013, vol. 87, no. 16, p. 165139
English Motivated by the recently synthesized cubic phase BaRuO₃ under high pressure and high temperature, a thorough study has been conducted on its temperature-dependent electronic properties by using the state-of-the-art ab initio computing framework of density-functional theory combined with dynamical mean-field theory. At ambient condition the cubic phase BaRuO₃ should be a correlated Hund's metal with frozen spin magnetic moment. The spin-spin correlation function and local magnetic susceptibility can be well described by the Curie-Weiss law over a wide temperature range. The calculated low-frequency self-energy functions of Ru 4d states apparently deviate from the behaviors predicted by Landau Fermi-liquid theory. Beyond that, the low-frequency optical conductivity can be fitted to a power law ℜσ(ω)∼ω−0.98, which further confirms the non-Fermi-liquid metallic state
Faculty
Faculté des sciences
Department
Physique
Language
  • English
Classification
Physics
License
License undefined
Identifiers
Persistent URL
https://folia.unifr.ch/unifr/documents/303077
Statistics

Document views: 7 File downloads:
  • hua_nfl.pdf: 1