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    Valence-band structure and critical point energies of diamond along [100]

    Access Status
    Fulltext not available
    Authors
    Edmonds, M.
    Tadich, A.
    Wanke, M.
    O’Donnell, Kane
    Smets, Y.
    Rietwyk, K.
    Riley, J.
    Pakes, C.
    Ley, L.
    Date
    2013
    Type
    Journal Article
    
    Metadata
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    Citation
    Edmonds, M. and Tadich, A. and Wanke, M. and O’Donnell, K. and Smets, Y. and Rietwyk, K. and Riley, J. et al. 2013. Valence-band structure and critical point energies of diamond along [100]. Physical Review B. 87: Article ID 085123.
    Source Title
    Physical Review B
    DOI
    10.1103/PhysRevB.87.085123
    ISSN
    10980121
    School
    Department of Imaging and Applied Physics
    URI
    http://hdl.handle.net/20.500.11937/46917
    Collection
    • Curtin Research Publications
    Abstract

    Accurate valence-band dispersions E(k⊥) have been determined for the technologically relevant Γ-Δ-X symmetry direction of hydrogen-terminated diamond (100) using normal emission angle-resolved photoemission spectroscopy for photon energies between 30 and 206 eV. By analyzing the data using a free-electron final-state model, the emission features can be well understood by assuming primary cone transitions. Critical point energies in the valence band are in good agreement with self-consistent quasiparticle GW calculations. Substantial modulations in the valence-band dispersion occurring in specific regions of the Brillouin zone have been traced to band crossings in the unoccupied free-electron final state. A one-band effective mass of (0.39 ± 0.30)m0 is determined from the band dispersion close to the Γ point and compared with values in the literature.

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