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Volumn 80, Issue 4, 2009, Pages

Unusually weak electron-phonon coupling in the Shockley surface state on Pd(111)

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EID: 70049109109     PISSN: 10980121     EISSN: 1550235X     Source Type: Journal    
DOI: 10.1103/PhysRevB.80.045429     Document Type: Article
Times cited : (17)

References (36)
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    • Heid, R.1    Bohnen, K.-P.2
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    • 70049098609 scopus 로고    scopus 로고
    • B. Meyer, C. Elsässer, and M. Fähnle, FORTRAN90 program for mixed-basis calculations for crystals, Max-Planck-Institut für Metallforschung, Stuttgart.
    • Meyer, B.1    Elsässer, C.2    Fähnle, M.3
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    • We comment here about the model calculation result, λ=0.23, for the Γ̄ surface state on Al(001) (Ref. 26) and the ab initio calculation value, λ=0.51 (Ref.). While at EF both computations give fairly close λ values [0.55 (Ref.) and 0.44 (Ref.)] at the Γ̄ surface state the model calculation λ is significantly smaller than the ab initio one. We attribute this discrepancy to the use of the Ashcroft pseudopotential in the model calculation. The one-parameter Ashcroft pseudopotential reproduces correctly the electron scattering at the Fermi surface while it is essentially less accurate for energies far from EF. It is the case of the Γ̄ surface state on Al(001).
    • We comment here about the model calculation result, λ=0.23, for the Γ̄ surface state on Al(001) (Ref. 26) and the ab initio calculation value, λ=0.51 (Ref.). While at EF both computations give fairly close λ values [0.55 (Ref.) and 0.44 (Ref.)] at the Γ̄ surface state the model calculation λ is significantly smaller than the ab initio one. We attribute this discrepancy to the use of the Ashcroft pseudopotential in the model calculation. The one-parameter Ashcroft pseudopotential reproduces correctly the electron scattering at the Fermi surface while it is essentially less accurate for energies far from EF. It is the case of the Γ̄ surface state on Al(001).
  • 36
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    • M. Weinelt, J. Phys.: Condens. Matter 14, R1099 (2002). 10.1088/0953-8984/14/43/202
    • (2002) J. Phys.: Condens. Matter , vol.14 , pp. 1099
    • Weinelt, M.1


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