What is the highest Tc for phonon-mediated superconductivity? |
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Authors: | Cao Tian-de Guo Sheng-li and Wang Tie-bang |
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Institution: | (1) Department of Physics, Nanjing University of Information Science & Technology, Nanjing, 210044, China |
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Abstract: | We suggest that the high-temperature superconductivity can be attributed to the director-roles of the van Hove singularity
between an electron-electron interaction and an electron-phonon interaction. The difference between the critical temperature
and the pairing temperature is presented, and the Fermi arc, the d-wave symmetry and the poor conductivity, etc., are discussed. In particular, the non-s-wave symmetry is predicted to have the highest T
c for superconductors.
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Keywords: | superconductivity phonon van Hove singularity Fermi surface |
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