A lattice field theoretical model for high-$T_c$ superconductivity

Details A lattice field theoretical model for high-$T_c$ superconductivity A lattice field theoretical model for high-$T_c$ superconductivity

1997-10-09

arxiv.org/abs/hep-lat/9710035v1

Nucl.Phys.Proc.Suppl.63:658-660,1998

Physics

High Energy Physics

High Energy Physics - Lattice

talk presented in the Lattice 97 conference

Scientific paper

10.1016/S0920-5632(97)00863-3

We present a 2+1-dimensional lattice model for the copper oxide superconductors and their parent compounds, in which both the charge and spin degrees of freedom are treated dynamically. The spin-charge coupling parameter is associated to the doping fraction in the cuprates. The model is able to account for the various phases of the cuprates and their properties, not only at low and intermediate doping but also for (highly) over-doped compounds. We acquire a qualitative understanding of high-$T_c$ superconductivity as a Bose-Einstein condensation of bound charge pairs.

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