Published in

American Physical Society, Physical Review Letters, 18(89)

DOI: 10.1103/physrevlett.89.186403

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Non-Fermi-liquid behavior of electron-spin fluctuations in an elemental paramagnet

Journal article published in 2002 by J. R. Stewart ORCID, B. D. Rainford, R. S. Eccleston, R. Cywinski
This paper was not found in any repository, but could be made available legally by the author.
This paper was not found in any repository, but could be made available legally by the author.

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Abstract

We report for the first time, the observation of non-Fermi-liquid scaling behavior in an elemental paramagnetic metal. Both the dynamical susceptibility and the resistivity of beta-Mn are shown to display non-Fermi-liquid scaling over a relatively large temperature range at ambient pressure. The temperature dependence of the resistivity in beta-Mn is consistent with the existence of an antiferromagnetic zero-temperature phase transition or ‘‘quantum critical point.’’ Since there is no site disorder in this pure element, we show that non-Fermi-liquid behavior observed in beta-Mn is not a consequence of summing over different local atomic environments, but a much more fundamental phenomenon.