title: Strong renormalization of phonon frequencies in Mg(1-x)Al(x)B2.
abstract: The phonon spectrum of Mg(1-x)Al(x)B2 shows a strong dependence on the aluminum content x. This is experimentally demonstrated by both Raman and inelastic neutron scattering and theoretically predicted by first-principles calculations. The observed changes in the phonon spectrum are put into perspective with respect to the superconducting properties within this family of materials.
authors.affiliation: Forschungszentrum Karlsruhe, IFP, P.O.B. 3640, D-76021 Karlsruhe, Germany.
authors.forename: B
authors.initials: B
authors.lastname: Renker
authors.forename: K B
authors.initials: KB
authors.lastname: Bohnen
authors.forename: R
authors.initials: R
authors.lastname: Heid
authors.forename: D
authors.initials: D
authors.lastname: Ernst
authors.forename: H
authors.initials: H
authors.lastname: Schober
authors.forename: M
authors.initials: M
authors.lastname: Koza
authors.forename: P
authors.initials: P
authors.lastname: Adelmann
authors.forename: P
authors.initials: P
authors.lastname: Schweiss
authors.forename: T
authors.initials: T
authors.lastname: Wolf