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Direct Measurement of Electron-Phonon Coupling with Time-Resolved ARPES

MPG-Autoren
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de Giovannini,  U.
Theory Group, Theory Department, Max Planck Institute for the Structure and Dynamics of Matter, Max Planck Society;
Center for Free Electron Laser Science;

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Hübener,  H.
Theory Group, Theory Department, Max Planck Institute for the Structure and Dynamics of Matter, Max Planck Society;
Center for Free Electron Laser Science;

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Sato,  S.
Theory Group, Theory Department, Max Planck Institute for the Structure and Dynamics of Matter, Max Planck Society;
Center for Free Electron Laser Science;
Center for Computational Sciences, University of Tsukuba;

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Rubio,  A.
Theory Group, Theory Department, Max Planck Institute for the Structure and Dynamics of Matter, Max Planck Society;
Center for Free Electron Laser Science;
Center for Computational Quantum Physics (CCQ), The Flatiron Institute;

Externe Ressourcen

https://arxiv.org/abs/2004.11082
(Preprint)

https://dx.doi.org/10.1103/PhysRevLett.125.136401
(Verlagsversion)

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PhysRevLett.125.136401.pdf
(Verlagsversion), 555KB

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Zitation

de Giovannini, U., Hübener, H., Sato, S., & Rubio, A. (2020). Direct Measurement of Electron-Phonon Coupling with Time-Resolved ARPES. Physical Review Letters, 125(13): 136401. doi:10.1103/PhysRevLett.125.136401.


Zitierlink: https://hdl.handle.net/21.11116/0000-0006-4521-7
Zusammenfassung
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.