Theory of Low Energy Electron Diffraction. : II. OPW Method
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概要
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The OPW method of the energy band calculation in solid state physics is applied to the theory of low energy electron diffraction. In the cases of "two-rod approximation" and the weak absorption, the amplitude reflection coefficient is derived on the basis of the dispersion surfaces with two branches for the normal incidence. In the case of the strong absorptions, considering the "two-dimensional OPW expansion" made by two-dimensional Bloch sum, the same fundamental equation as in I is obtained replacing the Fourier component of the crystal potential, V_<h-g>(Z) used in I, by an "effective potential" V^^∼_<h,g>(Z)=V_<h-g>(Z)-Q_<h,g>(Z)+R_<h,g>(Z), where -Q_<h,g>(Z) means the usual repulsive potential part which becomes maximum at the resonance condition K_<h^<r^2>>=0, and R_<h,g>(Z) a complex potential proportional to K_<h^r>. When the atomic layers are not periodic, R_<h,g>(Z) has a imaginary part even in the case of no inelastic scatterings.
- 社団法人日本物理学会の論文
- 1968-08-05
著者
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Ohtsuki Y.
Department Of Applied Physics Faculty Of Engineering University Of Tokyo:(present Address) Departmen
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Ohtsuki Y.
Department Of Applied Physics Faculty Of Engineering University Of Tokyo
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Ohtsuki Y.h.
Department Of Applied Physics Faculty Of Engineering University Of Tokyo
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