A link between the spin fluctuation and Fermi surface in high TC cuprates --- A consistent description within the single-band Hubbard model
Kazuhiko Kuroki, Ryotaro Arita, Hideo Aoki
Abstract
A link between the spin fluctuation and the "fermiology" is explored for the single-band Hubbard model within the fluctuation exchange (FLEX) approximation. We show that the experimentally observed peak position of the spin structure in the high TC cuprates can be understood from the model that reproduces the experimentally observed Fermi surface. In particular, both the variation of the incommensurability of the peak in the spin structure and the evolution of the Fermi surface with hole doping in La2-xSrxCuO4 may be understood with a second nearest neighbor hopping decreasing with hole doping.
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