2000/12/31 by E. Pavarini, I. Dasgupta, T. Saha-Dasgupta +2 · 1 citation
Physics and Astronomy · #cond-mat
paper · pdf · doi:10.1103/physrevlett.87.047003
published as Phys. Rev. Lett. 87, 047003 (2001) · 5 pages, Latex, 5 eps figures
arxiv created 2001/04/06 · arxiv updated 2009/11/30
By calculation and analysis of the bare conduction bands in a large number of hole-doped high-temperature superconductors, we have identified the energy of the so-called axial-orbital as the essential, material-dependent parameter. It is uniquely related to the range of the intra-layer hopping. It controls the Cu 4s-character, influences the perpendicular hopping, and correlates with the observed Tc at optimal doping. We explain its dependence on chemical composition and structure, and present a generic tight-binding model.