Quantum critical scaling and the origin of non-fermi-liquid behavior in Sc1-xUxPd3

Stephen D. Wilson, Pengcheng Dai, D. T. Adroja, S. H. Lee, J. H. Chung, J. W. Lynn, N. P. Butch, M. B. Maple

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Abstract

We used inelastic neutron scattering to study magnetic excitations of Sc1-xUxPd3 for U concentrations (x = 0.25, 0.35) near the spin glass quantum critical point (QCP). The excitations are spatially incoherent, broad in energy (E = hω), and follow ω/T scaling at all wave vectors investigated. Since similar ω/T scaling has been observed for UCu5-xPdx and CeCu6-xAu x near the antiferromagnetic QCP, we argue that the observed non-Fermi-liquid behavior in these f-electron materials arises from the critical phenomena near a T = 0 K phase transition, irrespective of the nature of the transition.

Original languageEnglish
Article number056402
JournalPhysical review letters
Volume94
Issue number5
DOIs
Publication statusPublished - 2005 Feb 11

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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    Wilson, S. D., Dai, P., Adroja, D. T., Lee, S. H., Chung, J. H., Lynn, J. W., Butch, N. P., & Maple, M. B. (2005). Quantum critical scaling and the origin of non-fermi-liquid behavior in Sc1-xUxPd3. Physical review letters, 94(5), [056402]. https://doi.org/10.1103/PhysRevLett.94.056402