Nonquasiparticle structure in the photoemission spectra from the Be(0001) surface and determination of the electron self energy
Complex structure in photoemission spectra of Be(0001) surface states near the Fermi energy is observed and explained as the effect of strong electron-phonon coupling. The weak momentum dependence of the electron-phonon contribution to the electron self energy Σ is exploited to determine Σ by direct inversion of the spectra.
Physical Review B
- Pub Date:
- January 2000
- Scattering by phonons magnons and other nonlocalized excitations;
- Surface states band structure electron density of states;
- Clean metal semiconductor and insulator surfaces