Electron-phonon interaction at the Be(0001) surface

Abstract

We present a first principle study of the electron-phonon (e-p) interaction at the Be(0001) surface. The real and imaginary part of the e-p self energy are calculated for the surface state in the binding energy range from the $\bar{\Gamma }$ point to the Fermi level. Our calculation shows an overall good agreement with several photoemission data measured at high and low temperatures. Additionally, we show that the energy derivative of real part of the self-energy presents a strong temperature and energy variation close to $E_F$, making it difficult to measure its value just at $E_F$.

Accepted in Phys. Rev. Lett., 5 figures

References in corpus (2)

• Phonons and related properties of extended systems from density-functional perturbation theory
• Role of bulk and surface phonons in the decay of metal surface states

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