Jump to main content
Jump to site search


Surface lattice dynamics and electron–phonon interaction in cesium ultra-thin films

Author affiliations

Abstract

The phonon dispersion curves of ultrathin films of Cs(110) on Pt(111) measured with inelastic helium atom scattering (HAS) are reported and compared with density-functional perturbation theory (DFPT) calculations. The combined HAS and DFPT analysis also sheds light on the bulk phonon dynamics of bcc-Cs, on which very little is known from neutron scattering due to its large neutron capture cross-section. Moreover the temperature dependence of the elastic HAS Debye–Waller exponent of Cs(110)/Cu(111) ultrathin films allows for an estimation of the electron–phonon coupling strength λ as a function of the film thickness.

Graphical abstract: Surface lattice dynamics and electron–phonon interaction in cesium ultra-thin films

Back to tab navigation

Publication details

The article was received on 11 Mar 2017, accepted on 05 Jun 2017 and first published on 14 Jun 2017


Article type: Paper
DOI: 10.1039/C7CP01572K
Citation: Phys. Chem. Chem. Phys., 2017, Advance Article
  •   Request permissions

    Surface lattice dynamics and electron–phonon interaction in cesium ultra-thin films

    D. Campi, M. Bernasconi, G. Benedek, A. P. Graham and J. P. Toennies, Phys. Chem. Chem. Phys., 2017, Advance Article , DOI: 10.1039/C7CP01572K

Search articles by author

Spotlight

Advertisements