Electrical Conductivity of Te in a Highly-Excited State
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概要
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The electrical conductivity of Te in a highly-excited state in a sense that there exists a high-density state of electron-hole pairs excited by an intense laser light is calculated under the assumption that the Coulomb scattering between carriers is responsible for the conductivity and that there is no bound exciton. The thermal Green's function method is employed and a particular attention has been paid to the gauge invariance of the formulation. The integral equations for the current vertex functions are solved by making use of Eliashberg's approximation, which is proved to be valid even for nondegenerate case of Te. The resulting expression for the electrical conductivity has a different density dependence corresponding to the difference of the degree of degeneracy of carriers. A numerical calculation has been carried out and a comparison is made with a result of the experimental observation by Nishina et al.
- 社団法人日本物理学会の論文
- 1972-12-05
著者
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Miura Yoshimasa
Department Of Applied Physics Tohoku University
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Horie Chuji
Department Of Applied Physics Faculty Of Engineering Tohoku University
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