Coarse-Grained Quantities in Aperiodic Systems. III : Monte-Carlo Calculation of the Impurity Band States
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概要
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The coarse-grained density of states is computed for an electron in a three-dimensional random array of impurities by the method of ensemble average of periodic systems (MEAPS) combined with the the Monte Carlo method. The model on which the calculation is made is due to Matsubara and Toyozawa (M-T) based on the tight binding approximation for the impurity band states. The result of the calculation qualitatively agrees with that of the Monte-Carlo calculation of Majlis based on the ensemble average of small systems. It shows how the perturbative approach of M-T is good at high concentration of impurities but it is a poor approximation at low concentration. A merit of the MEAPS compared with the method of ensemble average of small systems is discussed.
- 理論物理学刊行会の論文
- 1968-05-25
著者
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Okada Kenkichi
Department Of Chemistry Faculty Of Science Kyoto University
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MATSUDA Hirotsugu
Research Institute for Fundamental Physics, Kyoto University
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Matsuda Hirotsugu
Research Institute For Fundamental Physics Kyoto University
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OKADA Kenkichi
Department of Chemistry, Faculty of Science, Kyoto University
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