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

doi:10.1103/PhysRevLett.94.056402

Quantum critical scaling and the origin of non-fermi-liquid behavior in Sc_1-xU_xPd₃

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

Research output: Contribution to journal › Article › peer-review

24 Citations (Scopus)

Abstract

We used inelastic neutron scattering to study magnetic excitations of Sc_1-xU_xPd₃ 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 UCu_5-xPd_x and CeCu_6-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 language	English
Article number	056402
Journal	Physical Review Letters
Volume	94
Issue number	5
DOIs	https://doi.org/10.1103/PhysRevLett.94.056402
Publication status	Published - 11 Feb 2005
Externally published	Yes

ASJC Scopus subject areas

General Physics and Astronomy

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title = "Quantum critical scaling and the origin of non-fermi-liquid behavior in Sc1-xUxPd3",

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.",

author = "Wilson, {Stephen D.} and Pengcheng Dai and Adroja, {D. T.} and Lee, {S. H.} and Chung, {J. H.} and Lynn, {J. W.} and Butch, {N. P.} and Maple, {M. B.}",

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T1 - Quantum critical scaling and the origin of non-fermi-liquid behavior in Sc1-xUxPd3

AU - Wilson, Stephen D.

AU - Dai, Pengcheng

AU - Adroja, D. T.

AU - Lee, S. H.

AU - Chung, J. H.

AU - Lynn, J. W.

AU - Butch, N. P.

AU - Maple, M. B.

PY - 2005/2/11

Y1 - 2005/2/11

N2 - 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.

AB - 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.

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Quantum critical scaling and the origin of non-fermi-liquid behavior in Sc_1-xU_xPd₃

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