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RESEARCH PRODUCT
Direct Measurement of Electron-Phonon Coupling with Time-Resolved ARPES
Umberto De GiovanniniHannes HübenerShunsuke A. SatoShunsuke A. SatoAngel Rubiosubject
PhononAb initioFOS: Physical sciencesGeneral Physics and AstronomyAngle-resolved photoemission spectroscopyElectronic structure01 natural sciencesSettore FIS/03 - Fisica Della MateriaCondensed Matter::Materials Sciencesymbols.namesakeX-ray photoelectron spectroscopyCondensed Matter::SuperconductivityMesoscale and Nanoscale Physics (cond-mat.mes-hall)0103 physical sciences010306 general physicsPhysicsCouplingCondensed Matter - Materials ScienceCondensed Matter - Mesoscale and Nanoscale PhysicsMaterials Science (cond-mat.mtrl-sci)TR-ARPESFourier analysisExcited statesymbolsCondensed Matter::Strongly Correlated Electronselectron-phonon couplingAtomic physicsdescription
Time- and angular- resolved photoelectron spectroscopy is a powerful technique to measure electron dynamics in solids. Recent advances in this technique have facilitated band and energy resolved observations of the effect that excited phonons, have on the electronic structure. Here, we show with the help of ab initio simulations that the Fourier analysis of the time-resolved measurements of solids with excited phonon modes enables the determination of the band- and mode-resolved electron-phonon coupling directly from the experimental data without any additional input from theory. Such an observation is not restricted to regions of strong electron-phonon coupling and does not require strongly excited or hot phonons, but can be employed to monitor the dynamical renormalization of phonons in driven phases of matter.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2020-04-23 | Physical Review Letters |