Vibrational properties of epitaxial films on metals. II. fcc Ni on the Cu(001) surface

Journal Article · Wed Mar 15 04:00:00 EST 1989 · Phys. Rev. B: Condens. Matter; (United States)

DOI:https://doi.org/10.1103/PhysRevB.39.5617· OSTI ID:6184377

Chen, Y; Wu, Z Q; Yao, J M; Tong, S Y

The general vibrational properties of epitaxially grown fcc Ni film on the Cu(001) surface have been studied using a central-force lattice-dynamical slab model. We found that, since the force constant in the overlayer film is different from that of the substrate, the surface-phonon modes may merge into the substrate bulk-phonon band, and a strong hybridization between the surface phonons and the bulk modes may take place. The theoretical phonon dispersion curves and the spectral densities are presented, and new film modes have been identified.

• Research Organization: Department of Physics and Laboratory for Surface Studies, University of Wisconsin--Milwaukee, Milwaukee, Wisconsin 53201
• OSTI ID: 6184377
• Journal Information: Phys. Rev. B: Condens. Matter; (United States), Journal Name: Phys. Rev. B: Condens. Matter; (United States) Journal Issue: 9 Vol. 39:9; ISSN PRBMD
• Country of Publication: United States
• Language: English

Related Subjects

656000* -- Condensed Matter Physics
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
COPPER
CRYSTAL FACES
CRYSTAL MODELS
ELEMENTS
EPITAXY
FILMS
FUNCTIONS
HYBRIDIZATION
LATTICE VIBRATIONS
MATHEMATICAL MODELS
METALS
MODULATION
NICKEL
PHONONS
QUASI PARTICLES
SPECTRAL DENSITY
SPECTRAL FUNCTIONS
SUBSTRATES
THIN FILMS
TRANSITION ELEMENTS