title: Nonadiabatic effects in resonant inelastic x-ray scattering.
abstract: We have studied the spectral features of resonant inelastic x-ray scattering of condensed ethylene with vibrational selectivity both experimentally and theoretically. Purely vibrational spectral loss features and coupled electronic and vibrational losses are observed. The one-step theory for resonant soft x-ray scattering is applied, taking multiple vibrational modes and vibronic coupling into account. Our investigation of ethylene underlines that the assignment of spectral features observed in resonant inelastic x-ray scattering of polyatomic systems requires an explicit description of the coupled electronic and vibrational loss features.
authors.affiliation: Institut für Experimentalphysik, Universität Hamburg, Germany.
authors.forename: F
authors.initials: F
authors.lastname: Hennies
authors.forename: S
authors.initials: S
authors.lastname: Polyutov
authors.forename: I
authors.initials: I
authors.lastname: Minkov
authors.forename: A
authors.initials: A
authors.lastname: Pietzsch
authors.forename: M
authors.initials: M
authors.lastname: Nagasono
authors.forename: F
authors.initials: F
authors.lastname: Gel'mukhanov
authors.forename: L
authors.initials: L
authors.lastname: Triguero
authors.forename: M-N
authors.initials: MN
authors.lastname: Piancastelli
authors.forename: W
authors.initials: W
authors.lastname: Wurth
authors.forename: H
authors.initials: H
authors.lastname: Agren
authors.forename: A
authors.initials: A
authors.lastname: Föhlisch