Surface Core-Level Phonon Broadening of Li(110)

Enhanced vibrational broadening of core-level photoemission from the surface of Na(110).

The surface core level shift for lithium at the surface of lithium borate

The shallow Li 1s core level exhibits a surface-to-bulk core level shift for the stoichiometric Li2B4O7(110) surface. Angle-resolved photoemission spectroscopy was used to indentify Li 1s bulk and surface core level components at binding energies 56.570.4 and 53.770.5 eV, respectively. We find photoemission evidence for surface states of Li2B4O7(110) that exist in the gap of the projected bulk ...

Spectral features of LO phonon sidebands in luminescence of free excitons in GaN.

In the paper a combined experimental and theoretical investigation of the longitudinal optical phonon sidebands (PSBs) in the luminescence of free excitons in GaN at moderately high temperatures was reported. The spectral features, including line broadening, shift, and asymmetry of the one- and two-phonon PSBs, were revealed both experimentally and theoretically. It is found that the linewidth ...

Comparative study of anharmonicity : Ni „ 111 ... , Cu „ 111 ... , and Ag „ 111 ...

We present a comparative study of the structure and the dynamics of the most close packed surface of Ni, Cu, and Ag from near room temperature up to 0.9Tm , using molecular dynamics simulations and interaction potentials from the embedded atom method. Calculated shifts in the surface phonon frequencies, the broadening of their linewidths, and the variations in the mean square vibrational amplit...

Electron-phonon interaction at the Si(111)-7 x 7 surface.

It is shown that electron-phonon interaction provides a natural explanation for the unusual band dispersion of the metallic surface states at the Si(111)-(7 x 7) surface. Angle-resolved photoemission reveals a discontinuity of the adatom band at a binding energy close to the dominant surface phonon mode at h(omega0) = 70 meV. This mode has been assigned to adatom vibrations by molecular dynamic...