Direct measurement of electron-phonon coupling with time-resolved ARPES

(submitted), (2020)

Direct measurement of electron-phonon coupling with time-resolved ARPES

Umberto De Giovannini, Hannes Hübener, Shunsuke A. Sato, Angel Rubio

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 \textit{ab initio} simulations that the Fourier analysis of time-resolved measurements of solids with excited phonon modes leads, in fact, to an observation of the band- and mode-resolved electron-phonon coupling directly from the experimental data and without need for theoretical computations.

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arxiv
http://arxiv.org/abs/2004.11082
Notes
We acknowledge financial support from the European Research Council(ERC-2015-AdG-694097). The Flatiron Institute is a division of the Simons Foundation. UDG and HH contributed equally to the work.

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