Anderson localization and superconducting transition temperature in two-dimensional systems |
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Authors: | H Takagi Y Kuroda |
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Institution: | Department of Physics, Nagoya University, Nagoya 464, Japan |
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Abstract: | Effects of the Anderson localization on superconducting transition temperature Tc are examined by calculating a two-electron propagator K rigorously up to 0(?Fτ0)?1ln(Tτ0)], where τ0 is the electron life time due to impurity scattering and ?F the Fermi energy. The results show that in K the pair-breaking terms cancel out among themselves exactly and the remaining terms which contribute to the correction to the density of states and to the renormalization of electron-electron interaction by impurity scattering lead to the changes in Tc of 0{ln(Tτ0)}2] and of 0{ln(Tτ0)}3], respectively. |
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