title: Lattice dynamics of molybdenum at high pressure.
abstract: We have determined the lattice dynamics of molybdenum at high pressure to 37 GPa using high-resolution inelastic x-ray scattering. Over the investigated pressure range, we find a significant decrease in the H-point phonon anomaly. We also present calculations based on density functional theory that accurately predict this pressure dependence. Based on these results, we infer that the likely explanation for the H-point anomaly in molybdenum is strong electron-phonon coupling, which decreases upon compression due to the shift of the Fermi level with respect to the relevant electronic bands.
authors.affiliation: Earth Science Division, Lawrence Livermore National Laboratory, 7000 East Avenue, Livermore, California 94550, USA.
authors.forename: Daniel L
authors.initials: DL
authors.lastname: Farber
authors.forename: Michael
authors.initials: M
authors.lastname: Krisch
authors.forename: Daniele
authors.initials: D
authors.lastname: Antonangeli
authors.forename: Alexandre
authors.initials: A
authors.lastname: Beraud
authors.forename: James
authors.initials: J
authors.lastname: Badro
authors.forename: Florent
authors.initials: F
authors.lastname: Occelli
authors.forename: Daniel
authors.initials: D
authors.lastname: Orlikowski