Studies of Many-Body Effect on Resonant Tunneling by Green Function Method
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概要
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An analytical expression for the Green function is derived for an independent electron which moves in a one-dimensional space with a double-square potential barrier. A perturbation theory is constructed for a system of interacting electrons and the effect of the Coulomb interaction on resonant tunneling phenomena is studied. Solving numerically the Dyson equation of the one-dimensional system in the Hartree approximation, the self-consistent Green function is computed, from which the transmission probability through the barrier and the density of states within the well region have been calculated and analyzed. The impurity Anderson model is examined in comparison with the present model of more fundamental nature. Our method is expected to be applied to studies of other types of interaction in an inhomogeneous system in quasi-one-dimension.
- 社団法人日本物理学会の論文
- 1994-01-15
著者
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Eto Mikio
Department Of Physics Faculty Of Science And Technology Keio University
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Kawamura Kiyoshi
Department Of Electrical Engineering College Of Science And Technology Nihon University
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Yamaguchi F
Department Of Physics Faculty Of Science And Technology Keio University
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Yamaguchi Fumiko
Department Of Physics Faculty Of Science And Technology Keio University
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Kawamura Kiyoshi
Department of Chemistry, Faculty of Science, Kyoto University
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