title: Persistence of well-defined collective excitations in a molten transition metal
abstract: Well-defined microscopic collective excitations are found in liquid Ni at 1763 K by means of inelastic neutron scattering. Such excitations are supported by the liquid despite an anharmonic character of its thermodynamic functions. Consideration of the detailed shape of the interionic pair potential provides a way to understand why atomic motions at microscopic scales behave in a way much closer to the alkali metals than to the liquefied rare gases.
authors.affiliation: Consejo Superior de Investigaciones Cientificas, Serrano 119-123, E-28006 Madrid, Spain.
authors.initials: FJ
authors.lastname: Bermejo
authors.initials: ML
authors.lastname: Saboungi
authors.initials: DL
authors.lastname: Price
authors.initials: M
authors.lastname: Alvarez
authors.initials: B
authors.lastname: Roessli
authors.initials: C
authors.lastname: Cabrillo
authors.initials: A
authors.lastname: Ivanov