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Updated: Jun 14, 2026

High Resolution Phonon-assisted Quasi-resonance Fluorescence Spectroscopy
Published on: June 28, 2016
Dynamics of electron-phonon scattering: crystal- and angular-momentum transfer probed by resonant inelastic x-ray
1Institut für Experimentalphysik, Universität Hamburg and Centre for Free-Electron Laser Science, Hamburg, Germany. martin.beye@desy.de
Abstract:
Experimentally, we observe angular-momentum transfer in electron-phonon scattering, although it is commonly agreed that phonons transfer mostly linear momentum. Therefore, the incorporation of angular momentum to describe phonons is necessary already for simple semiconductors and bears significant implications for the formation of new quasiparticles in correlated functional materials. Separation of linear and angular-momentum transfer in electron-phonon scattering is achieved by highly selective excitations on the femtosecond time scale of resonant inelastic x-ray scattering.
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