Abstract
High resolution helium atom diffraction and single phonon inelastic scattering experiments were performed on a single monolayer KCN film epitaxially grown onto a KBr(001) substrate. Although the cleaved surface of single crystal KCN appears disordered, the one monolayer film was stabilized by the substrate. The measurements from this film in the 〈100〉 direction gave dispersion curves with a Rayleigh mode, a dispersionless mode near 12 meV, a possible crossing mode, and a suggestion of a weak interface mode near 2 meV. The Debye temperature of the film was found to be 127 K, which was very close to that found for the cleaved single crystal KCN. A kink in the Debye-Waller factor near 150–160 K may be associated with a surface phase transition.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
