Abstract
Fermi surface (FS) maps and spectral intensities obtained recently in via high resolution ARPES measurements are analyzed using mean-field Hartree Fock and self-consistent renormalization computations within the framework of the one-band Hubbard model Hamiltonian. We show that the remarkable observed crossover of the FS from small to large sheets reflects a reduction in the value of the effective Hubbard U with increasing electron doping and the collapse of the correlation induced Mott pseudogap just above optimal doping.
- Received 29 December 2001
DOI:https://doi.org/10.1103/PhysRevB.66.140513
©2002 American Physical Society