title: Non-fermi-liquid behavior of electron-spin fluctuations in an elemental paramagnet.
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.
authors.affiliation: Institut Laue-Langevin, 6, rue Jules Horowitz, F-38042, France.
authors.forename: J R
authors.initials: JR
authors.lastname: Stewart
authors.forename: B D
authors.initials: BD
authors.lastname: Rainford
authors.forename: R S
authors.initials: RS
authors.lastname: Eccleston
authors.forename: R
authors.initials: R
authors.lastname: Cywinski