Helium atom scattering experiments and molecular dynamics simulations of the 
structure and lattice dynamics of 15-layer acetylene films on KCl(001)

Toennies, J. P.; Träger, F.; Weiss, H.; Picaud, S.; Hoang, P. N. M.

Datensatz

DATENSATZ AKTIONENEXPORT

Zur Ablage hinzufügen

Lokale TagsFreigabegeschichteDetailsÜbersicht

Freigegeben

Zeitschriftenartikel

Helium atom scattering experiments and molecular dynamics simulations of the structure and lattice dynamics of 15-layer acetylene films on KCl(001)

MPG-Autoren

/persons/resource/persons173691

Toennies, J. P.
Emeritus Group Molecular Interactions, Max Planck Institute for Dynamics and Self-Organization, Max Planck Society;

/persons/resource/persons173693

Träger, F.
Emeritus Group Molecular Interactions, Max Planck Institute for Dynamics and Self-Organization, Max Planck Society;

Externe Ressourcen

Es sind keine externen Ressourcen hinterlegt

Volltexte (beschränkter Zugriff)

Für Ihren IP-Bereich sind aktuell keine Volltexte freigegeben.

Volltexte (frei zugänglich)

Es sind keine frei zugänglichen Volltexte in PuRe verfügbar

Ergänzendes Material (frei zugänglich)

Es sind keine frei zugänglichen Ergänzenden Materialien verfügbar

Zitation

Toennies, J. P., Träger, F., Weiss, H., Picaud, S., & Hoang, P. N. M. (2002). Helium atom scattering experiments and molecular dynamics simulations of the structure and lattice dynamics of 15-layer acetylene films on KCl(001). Physical Review B, 65(16): 165427, pp. 165427-1-165427-12.

Zitierlink: https://hdl.handle.net/11858/00-001M-0000-0029-1795-9

Zusammenfassung

The surface structure and lattice dynamics of thick films of 15 to 40 layers of acetylene adsorbed on a KCl(001) single crystal surface have been investigated at about 40 K by combining helium atom scattering (HAS) experiments with classical molecular dynamics simulations. As rarely occurs for physisorbates on ionic crystals layer-by-layer growth is observed by HAS up to at least 15 layers producing films with a (√2 x √2)R45⁰ geometry. The simulations confirm the stability and structure of these layers up to about 100 K. The time-of-flight spectra reveal along the [110] direction at least four phonon modes, which are assigned by simulations based on the calculated power spectra of the velocity and angular autocorrelation functions.