Observation of phonons with resonant inelastic x-ray scattering

Details Observation of phonons with resonant inelastic x-ray scattering Observation of phonons with resonant inelastic x-ray scattering

2010-09-22

arxiv.org/abs/1009.4356v1

J. Phys.: Condens. Matter 22 485601 (2010)

Physics

Condensed Matter

Strongly Correlated Electrons

11 pages, 3 figures

Scientific paper

10.1088/0953-8984/22/48/485601

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.

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