Inelastic X-ray scattering from phonons

Observation of phonons with resonant inelastic x-ray scattering.

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-hol...

Heterodyne x-ray diffuse scattering from coherent phonons

Here, we report Fourier-transform inelastic x-ray scattering measurements of photoexcited GaAs with embedded ErAs nanoparticles. We observe temporal oscillations in the x-ray scattering intensity, which we attribute to inelastic scattering from coherent acoustic phonons. Unlike in thermal equilibrium, where inelastic x-ray scattering is proportional to the phonon occupation, we show that the sc...

Comparative study of the phonons in nonsuperconducting BaC6 and superconducting CaC6 using inelastic x-ray scattering

A. C. Walters,1,2,* C. A. Howard,2 M. H. Upton,3,4 M. P. M. Dean,4 A. Alatas,3 B. M. Leu,3 M. Ellerby,2 D. F. McMorrow,2 J. P. Hill,4 M. Calandra,5 and F. Mauri5 1ESRF, Polygone Scientifique Louis Néel, 6 rue Jules Horowitz, F-38000 Grenoble, France 2London Centre for Nanotechnology and Department of Physics and Astronomy, University College London, London WC1E 6BT, United Kingdom 3Advanced Pho...

Magnetic Resonant Inelastic X-ray Scattering

Inelastic x-ray scattering measurements of phonon

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