title: Observation of phonons with resonant inelastic x-ray scattering.
abstract: Phonons, the quantum mechanical representation of lattice vibrations, and their coupling to the electronic degrees of freedom are important for understanding thermal and electric properties of materials. For the first time, phonons have been measured using resonant inelastic x-ray scattering (RIXS) across the Cu K-edge in cupric oxide (CuO). Analyzing these spectra using an ultra-short core-hole lifetime approximation and exact diagonalization techniques, we can explain the essential inelastic features. The relative spectral intensities are related to the electron-phonon coupling strengths.
authors.affiliation: Advanced Photon Source, Argonne National Laboratory, Argonne, IL 60439, USA. hasan.yavas@desy.de
authors.forename: H
authors.initials: H
authors.lastname: Yavaş
authors.forename: M
authors.initials: M
authors.lastname: van Veenendaal
authors.forename: J
authors.initials: J
authors.lastname: van den Brink
authors.forename: L J P
authors.initials: LJ
authors.lastname: Ament
authors.forename: A
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authors.lastname: Alatas
authors.forename: B M
authors.initials: BM
authors.lastname: Leu
authors.forename: M-O
authors.initials: MO
authors.lastname: Apostu
authors.forename: N
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authors.lastname: Wizent
authors.forename: G
authors.initials: G
authors.lastname: Behr
authors.forename: W
authors.initials: W
authors.lastname: Sturhahn
authors.forename: H
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authors.lastname: Sinn
authors.forename: E E
authors.initials: EE
authors.lastname: Alp