Doping dependence of the Neel temperature in Mott-Hubbard antiferromagnets: Effect of vortices
Abstract
In accordance with recent calculations suggesting that holes doped into a Mott-Hubbard antiferromagnet dress with vortices, we study its magnetic phase diagram. Using a Berezinskii-Kosterlitz-Thouless-type renormalization group theory we calculate the doping-dependent Neel temperature in good agreement with experiments for high-Tc cuprates. Interestingly, the critical doping where long-range order vanishes at zero temperature is predicted to be xc ~ 0.02, independently of any energy scales of the model.Keywords
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