Electron-phonon interaction at the Be(0001) surface

Details Electron-phonon interaction at the Be(0001) surface Electron-phonon interaction at the Be(0001) surface

2003-10-03

arxiv.org/abs/cond-mat/0310069v1

Physics

Condensed Matter

Materials Science

Accepted in Phys. Rev. Lett., 5 figures

Scientific paper

10.1103/PhysRevLett.91.166803

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 $E_{F}$.

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