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Volumn 76, Issue 3, 2007, Pages

Quantum size effect induced dilute atomic layers in ultrathin Al films

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EID: 34447333091     PISSN: 10980121     EISSN: 1550235X     Source Type: Journal    
DOI: 10.1103/PhysRevB.76.035409     Document Type: Article
Times cited : (19)

References (23)
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    • In a jellium model, the Fermi wavelength λF of our Al superlattice can be estimated using kF = (3 π2 n)1 3 and kF =2π λF, with n being the density of free electrons. For our 0.35 nm thick film containing 1.4-1.5 ML of Al atoms, this yields λF (film) = (0.974-0.996) × λF (Al), with λF (Al) =0.36 nm. Since the jellium model was, however, shown to underestimate λF by ≈5% as compared to a self-consistent LCAO calculation [10.1103/PhysRevB.27.1991 0163-1829 PRBMDO
    • In a jellium model, the Fermi wavelength λF of our Al superlattice can be estimated using kF = (3 π2 n)1 3 and kF =2π λF, with n being the density of free electrons. For our 0.35 nm thick film containing 1.4-1.5 ML of Al atoms, this yields λF (film) = (0.974-0.996) × λF (Al), with λF (Al) =0.36 nm. Since the jellium model was, however, shown to underestimate λF by ≈5% as compared to a self-consistent LCAO calculation [P. J. Feibelman, Phys. Rev. B PRBMDO 0163-1829 10.1103/PhysRevB.27.1991 27, 1991 (1983)], we used as first approximation λF (film) = λF (Al) =0.36 nm.
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