Pseudogap Phenomena in the BCS Pairing Model(Condensed Matter : Electronic Structure, Electrical, Mgagnetic and Optical Properties)
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概要
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We investigate pseudogap phenomena realized in the BCS pairing model with a long but finite interaction range. We calculate the single-particle self-energy in all orders exactly in the temperature range where the superconducting fluctuation propagator is Gaussian-like. It is found that vertex corrections to the self-energy, which are discarded in the previous studies, are crucially important for the pseudogap of the single-particle density of states in higher order calculations.
- 社団法人日本物理学会の論文
- 2002-05-15
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