Abstract
The antiferromagnetic insulating phase in La 2- x Sr x CuO 4 is studied by beginning from a doped Fermi-liquid phase, which undergoes a spin-density-wave-like transition as doping is reduced. Strong correlation effects renormalize the bands near half-filling, until the susceptibility satisfies a Stoner criterion. The ordered phase is predicted to become more incommensurate as doping is increased. A mode-mode coupling formalism is introduced to study the effect of interlayer coupling.
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