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On the enhancement of superconductivity due to Van Hove singularity
Authors:Xu Tiefeng  Bai Guiru
Institution:(1) Department of Physics, Ningbo University, 315211 Ningbo, Zhejiang, People's Republic of China
Abstract:We have rigorously solved the standard BCS gap equation with the density of states of Van Hove type. The result shows that the enhancement ofT c is not as effective as previously estimated. It seems unlikely that Van Hove singularity inN(E) can be theT c -enhancement mechanism for the high-T c Cu oxides.
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