Superconductivity by Kinetic Energy Saving?

D. van der Marel; H. J. A. Molegraaf; C. Presura; I. Santoso

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arXiv · cond-mat/0302169

Superconductivity by Kinetic Energy Saving?

D. van der Marel·H. J. A. Molegraaf·C. Presura·I. Santoso

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Abstract

A brief introduction is given in the generic microscopic framework of superconductivity. The consequences for the temperature dependence of the kinetic energy, and the correlation energy are discussed for two cases: The BCS scenario and the non-Fermi liquid scenario. A quantitative comparison is made between the BCS-prediction for d-wave pairing in a band with nearest neighbor and next-nearest neighbor hoppping and the experimental specific heat and the optical intraband spectral weight along the plane. We show that the BCS-prediction produces the wrong sign for the kink at Tc of the intraband spectral weight, even though the model calculation agrees well with the specific heat.

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D. van der Marel, H. J. A. Molegraaf, C. Presura, I. Santoso. 2003-02-10. Superconductivity by Kinetic Energy Saving?. https://arxiv.org/abs/cond-mat/0302169

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