Effective Kink Energy and Step Stiffness

Effective Kink Energy and Step Stiffness

We present a highly reliable statistical mechanical approach to calculate step-related quantities on the vicinal surface, which is comprised of the imaginary path-weight random walk method and the numerical renormalization group method. We applied the method to the studies of Si(001), Si(111) 7×7 an...

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Veröffentlicht in:Hyomen Kagaku 1999/12/10, Vol.20(12), pp.837-844
Hauptverfasser: AKUTSU, Noriko, AKUTSU, Yasuhiro, YAMAMOTO, Takao
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creator AKUTSU, Noriko
AKUTSU, Yasuhiro
YAMAMOTO, Takao
description We present a highly reliable statistical mechanical approach to calculate step-related quantities on the vicinal surface, which is comprised of the imaginary path-weight random walk method and the numerical renormalization group method. We applied the method to the studies of Si(001), Si(111) 7×7 and Si(111) 1×1 surfaces. From the effective kink energy, we obtain anisotropic step tension, step stiffness, equilibrium island shape, and step interaction coefficient, which allows quantitative comparison with experiments.
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