Electrical Conductivity above the Superconducting Transition Temperature in Quasi-One-Dimensional Conductors
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概要
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The parallel (to the chain axis) excess conductivity due to superconducting fluctuation above the transition temperature T_c is calculated. The phase representation of the BGD model with Josephson type interchain interaction is used. The excess conductivity σ' behaves as ε^<-1/2> (ε=(T-T_c)/T_c) near the transition temperature. At higher temperatures σ' behaves as (T/T_c)^<-3+2η_->, where η_-=√<(1+α^^~)/(1-α^^~)>, α^^~=(g_2-g_1/2)/(πv_F) and g_2(g_1) is the coupling constant of the intrachain forward (backward) scattering of the BGD model. Also a diagram technic in treating the phase hamiltonian is described.
- 理論物理学刊行会の論文
- 1981-07-25
著者
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Wakata M
Mitsubishi Electric Corp. Kanagawa Jpn
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Wakata Mitsunobu
Department Of Physics Faculty Of Science Tokyo Institute Of Technology
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Okamoto Kiyomi
Department Of Applied Physics Faculty Of Science Tokyo Institute Of Technology
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WAKATA Mitsunobu
Department of Physics, Faculty of Science, Tokyo Institute of Technology
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