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arXiv · 2003.00618

Revisiting the low temperature electron-phonon relaxation of noble metals

Shota Ono
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Abstract

The low temperature electron-phonon (e-ph) relaxation near the surface of noble metals, Cu and Ag, is studied by using the density-functional theory approach. The appearance of the surface phonon mode can give rise to a strong enhancement of the Eliashberg function at low frequency $\omega$. Assuming the Eliashberg function proportional to the square of $\omega$ in the low frequency limit, the e-ph relaxation time obtained from the surface calculations is shorter than that from the bulk calculation. The calculated e-ph relaxation time for the former is in agreement with a recent experiment for thin films.

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Shota Ono. 2020-03-02. Revisiting the low temperature electron-phonon relaxation of noble metals. https://doi.org/10.1103/physrevb.101.201404

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