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
Campi, D., Bernasconi, M., Benedek, G., Graham, A., & Toennies, J. (2017). Surface lattice dynamics and electron-phonon interaction in cesium ultra-thin films. PHYSICAL CHEMISTRY CHEMICAL PHYSICS, 19(25), 16358-16364 [10.1039/c7cp01572k].
Citazione: | Campi, D., Bernasconi, M., Benedek, G., Graham, A., & Toennies, J. (2017). Surface lattice dynamics and electron-phonon interaction in cesium ultra-thin films. PHYSICAL CHEMISTRY CHEMICAL PHYSICS, 19(25), 16358-16364 [10.1039/c7cp01572k]. | |
Tipo: | Articolo in rivista - Articolo scientifico | |
Carattere della pubblicazione: | Scientifica | |
Presenza di un coautore afferente ad Istituzioni straniere: | Si | |
Titolo: | Surface lattice dynamics and electron-phonon interaction in cesium ultra-thin films | |
Autori: | Campi, D; Bernasconi, M; Benedek, G; Graham, A; Toennies, J | |
Autori: | ||
Data di pubblicazione: | 2017 | |
Lingua: | English | |
Rivista: | PHYSICAL CHEMISTRY CHEMICAL PHYSICS | |
Digital Object Identifier (DOI): | http://dx.doi.org/10.1039/c7cp01572k | |
Appare nelle tipologie: | 01 - Articolo su rivista |