The 3d-to-4s-by-2p highway to superconductivity in cuprates

Abstract

High-temperature superconductors are nowadays found in great variety and hold technological promise. It is still an unsolved mystery that the critical temperature T_c of the basic cuprates is so high. The answer might well be hidden in a conventional corner of theoretical physics, overlooked in the recent hunt for exotic explanations of new effects in these materials. A forgotten intra-atomic s-d two-electron exchange in the Cu atom is found to provide a strong (~eV) electron pairing interaction. A Bardeen-Cooper-Schrieffer approach can explain the main experimental observations and predict the correct d_{x^2-y^2} symmetry of the gap.

4 pages, 3 figures, LaTeX2e

References in corpus (3)

• Heat Transport in a Strongly Overdoped Cuprate: Fermi Liquid and Pure d-wave BCS Superconductor
• Thermodynamics of anisotropic-gap and multiband clean BCS superconductors
• Reduced pairing hamiltonian for interatomic two-electron exchange in layered cuprates

Cited by in corpus (4)

• Quantum computing with neutral atoms
• High-T${}_c$ cuprates: a story of two electron subsystems
• Superconductivity of overdoped cuprates: the modern face of the ancestral two-electron exchange
• Kondo $s$-$d$ exchange in the CuO${}_2$ plane as the long sought interaction determining $T_c$ in cuprates