A Theoretical Study for the Superconductivity under the Ultra-High Magnetic Field in the Strong Coupling
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概要
- 論文の詳細を見る
The formulation of strong coupling theory for superconductivity in the ultra-high magnetic field is made in the expression of Dyson's equation for the case where electrons are confined only in a few Landau levels. The set of self-consistent equations is proposed in the procedure of Eliashberg theory. Further, results of numerical calculation for the 2-dimensional system performed by the use of Frolich-type potential are discussed. In the dependence of the critical temperature T_c on the field, the convex-structures appear whose peaks correspond to the half-filling in Landau levels. For the ultra-high field where electrons occupy only the ground Landau level, T_c increases with increasing the field. However, it has the tendency to be suppressed by the effect of the retardation for the interaction. On the contrary, the renormalization coefficient increases more abruptly. These behaviors are characteristic features shown clearly in the present calculation.
- 社団法人日本物理学会の論文
- 1994-04-15
著者
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Goto Hiroki
Department Of Mathematics And Physical Science Graduate School Of Science And Technology Chiba Unive
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Goto Hiroki
Department Of Applied Chemistry Nagoya Institute Of Technology
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Natsume Yuhei
Department Of Physics Faculty Of Science Chiba University
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Natsume Yuhei
Department Of Phycics Faculty Of Science Chiba University
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