Theory for Dynamical Short Range Order and Fermi Surface Volume in Strongly Correlated Systems

Details Theory for Dynamical Short Range Order and Fermi Surface Volume in Strongly Correlated Systems Theory for Dynamical Short Range Order and Fermi Surface Volume in Strongly Correlated Systems

1996-04-16

arxiv.org/abs/cond-mat/9604093v1

Physics

Condensed Matter

5 pages, Revtex, 4 postscript figures

Scientific paper

10.1103/PhysRevB.54.4336

Using the fluctuation exchange approximation of the one band Hubbard model, we discuss the origin of the changing Fermi surface volume in underdoped cuprate systems due to the transfer of occupied states from the Fermi surface to its shadow, resulting from the strong dynamical antiferromagnetic short range correlations. The momentum and temperature dependence of the quasi particle scattering rate shows unusual deviations from the conventional Fermi liquid like behavior. Their consequences for the changing Fermi surface volume are discussed. Here, we investigate in detail which scattering processes might be responsible for a violation of the Luttinger theorem. Finally, we discuss the formation of hole pockets near half filling.

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