Abstract

Fermi surface (FS) maps and spectral intensities obtained recently in Nd₂₋ₓCeₓCuO₄±δ via high resolution ARPES measurements are analyzed using mean-field Hartree Fock and self-consistent renormalization computations within the framework of the one-band t-t′-t″-U 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.

Notes

Originally published in Physical Review B v.66 (2002): 140513(R). DOI: 10.1103/PhysRevB.66.140513

Keywords

Fermi surface, ARPES, Mott pseudogap, Nd2-xCexCuO4±δ

Subject Categories

Fermi surfaces

Disciplines

Physics

Publisher

American Physical Society

Publication Date

10-31-2002

Rights Information

Copyright 2002 American Physical Society.

Rights Holder

American Physical Society

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