Fermi surface evolution and collapse of the Mott pseudogap in Nd2-xCexCuO4±δ -: art. no. 140513

被引：118

作者：

Kusko, C ^{[1
]}

Markiewicz, RS

Lindroos, M

Bansil, A

机构：

[1] Northeastern Univ, Dept Phys, Boston, MA 02115 USA

[2] Tampere Univ Technol, Inst Phys, FIN-33101 Tampere, Finland

来源：

PHYSICAL REVIEW B | 2002年 / 66卷 / 14期

关键词：

D O I：

10.1103/PhysRevB.66.140513

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Fermi surface (FS) maps and spectral intensities obtained recently in Nd2-xCexCuO4+/-delta 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.

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页码：1 / 4

页数：4

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