Phys. Rev. B 72, 075422 (2005) [6 pages]Electron-phonon coupling on the Mg(0001) surfaceReceived 28 March 2005; revised 15 June 2005; published 12 August 2005 We have studied the Γ̅ surface state on the Mg(0001) surface by angle-resolved photoemission spectroscopy. An analysis of the temperature-dependent linewidth of this state within the Debye model yields a value of λ=0.27(2) for the electron-phonon coupling constant which is in good agreement with available data for bulk Mg. The electron-electron+electron-defect scattering contribution is found by subtracting the electron-phonon contribution from the measured hole linewidth. Its value compares well with the computed result. The analysis of the role of two- and three-dimensional effects in the hole dynamics shows that interband transitions from bulk states to the hole are the dominant mechanism of the hole decay. © 2005 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevB.72.075422
DOI:
10.1103/PhysRevB.72.075422
PACS:
79.60.Bm, 73.20.−r, 71.38.−k
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