Developments in the negative-U modelling of the cuprate HTSC systems

Abstract

The paper deals with the many stands that go into creating the unique and complex nature of the HTSC cuprates above Tc as below. Like its predecessors it treats charge, not spin or lattice, as prime mover, but thus taken in the context of the chemical bonding relevant to these copper oxides. The crucial shell filling, negative-U, double-loading fluctuations possible there require accessing at high valent local environment as prevails within the mixed valent, inhomogeneous two sub-system circumstance of the HTSC materials. Close attention is paid to the recent results from Corson, Demsar, Li, Johnson, Norman, Varma, Gyorffy and colleagues.

44 pages:200+ references. Submitted to J.Phys.:Condensed Matter, Sept 7 2001

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Cited by in corpus (10)

• Two-particle correlations in a dynamic cluster approximation with continuous momentum dependence: Superconductivity in the 2D Hubbard model
• Disordered two-dimensional superconductors: roles of temperature and interaction strength
• Structural matters in HTSC; the origin and form of stripe organization and checker boarding
• Superconductivity of overdoped cuprates: the modern face of the ancestral two-electron exchange
• Coulomb blockade in molecular quantum dots
• Spectroscopic Bogoliubov features near the unitary limit
• Increasing superconducting $T_c$ by layering in the attractive Hubbard model
• Spin singlet topological superconductivity in the attractive Rashba Hubbard model
• A negative-U interpretation of the femto-second laser pulse induced crystallographic expansion of a cuprate HTSC material reported recently by Gedik et al
• Evolution with hole doping of the electronic excitation spectrum in the cuprate superconductors