Origin and doping dependence of the photoemission pseudogap in Cu oxides

M.D. Núñez-Regueiro
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M.D. Núñez-Regueiro: Grenoble High Magnetic Field Laboratory,MPI-FKF and CNRS

The European Physical Journal B: Condensed Matter and Complex Systems, 1999, vol. 10, issue 2, 197-200

Abstract: Abstract: A recent report on ARPES on insulating Ca2CuO2Cl2, compared to previous data from Sr2CuO2Cl2 and Dy-doped Bi2Sr2CaCu2O8+δ, sheds new light on the origin of the anisotropic pseudogap observed in the normal state of underdoped cuprate oxides. The energy dispersion of the insulator is attributed to strong AF correlations enhanced by the diagonal hopping between magnetic sites, which is progressively deformed by the possibility of nearest neighbour hopping, that increases with hole doping.

Keywords: PACS.; 74.25.Jb; Electronic; structure; -; 74.72.-h; High-; compounds (search for similar items in EconPapers)
Date: 1999
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DOI: 10.1007/s100510050845

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