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arXiv · 1607.06489

Interplay between BCS and Mott physics in the phenomenon of high-$T_c$ superconductivity

V. A. Khodel·J. W. Clark·M. V. Zverev
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Abstract

Superconducting electron systems of solids hosting flat bands are studied, with a view to improved understanding of the fundamental physics giving rise to high-temperature superconductivity. We present a modified form of the set of Gor'kov equations of BCS theory that incorporates a Mott-like gap in the single-particle spectrum. Such a quantity is emergent in systems with flat bands having interactions repulsive in the Cooper channel, provided particle-hole symmetry is broken. The equations so obtained are applied to the elucidation of features of the two-gap structure of single-particle spectra of underdoped high-$T_c$ superconductors, as revealed in angle-resolved photoemission spectrometry.

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V. A. Khodel, J. W. Clark, M. V. Zverev. 2016-07-21. Interplay between BCS and Mott physics in the phenomenon of high-$T_c$ superconductivity. https://arxiv.org/abs/1607.06489

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