Phys. Rev. Lett. 84, 4994–4997 (2000)Doping Dependence of the Néel Temperature in Mott-Hubbard Antiferromagnets: Effect of VorticesReceived 12 October 1999; published in the issue dated 22 May 2000 The rapid destruction of long-range antiferromagnetic order upon doping of Mott-Hubbard antiferromagnetic insulators is studied within a generalized Berezinskii-Kosterlitz-Thouless renormalization group theory in accordance with recent calculations suggesting that holes dress with vortices. We calculate the doping-dependent Néel 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 system. © 2000 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.84.4994
DOI:
10.1103/PhysRevLett.84.4994
PACS:
75.50.Ee, 05.10.Cc, 74.62.Dh, 75.70.Ak
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