title: Evidence for an ultrafast breakdown of the BeO band structure due to swift argon and xenon ions.
abstract: Auger-electron spectra associated with Be atoms in the pure metal lattice and in the stoichiometric oxide have been investigated for different incident charged particles. For fast incident electrons, for Ar7+ and Ar15+ ions as well as Xe15+ and Xe31+ ions at velocities of 6% to 10% the speed of light, there are strong differences in the corresponding spectral distributions of Be-K Auger lines. These differences are related to changes in the local electronic band structure of BeO on a femtosecond time scale after the passage of highly charged heavy ions.
authors.affiliation: Helmholtz-Zentrum Berlin für Materialien und Energie, Institut G-I2, Hahn-Meitner-Platz 1, 14109 Berlin, Germany. schiwietz@helmholtz-berlin.de
authors.forename: G
authors.initials: G
authors.lastname: Schiwietz
authors.forename: K
authors.initials: K
authors.lastname: Czerski
authors.forename: M
authors.initials: M
authors.lastname: Roth
authors.forename: P L
authors.initials: PL
authors.lastname: Grande
authors.forename: V
authors.initials: V
authors.lastname: Koteski
authors.forename: F
authors.initials: F
authors.lastname: Staufenbiel