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.
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
Recommended Citation
Kusko, C.; Markiewicz, R. S.; Lindroos, M.; and Bansil, A., "Fermi surface evolution and collapse of the Mott pseudogap in Nd2-xCexCuO4±δ" (2002). Physics Faculty Publications. Paper 384.
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Notes
Originally published in Physical Review B v.66 (2002): 140513(R). DOI: 10.1103/PhysRevB.66.140513