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Antiferromagnetic Correlation under the External Magnetic Field in the Hubbard Model

S. P. Hong·H. Doh·S. H. Suck Salk
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Abstract

By deriving a generalized Harper's equation, we investigate the effects of temperature $T$ and hole doping $\d$ on antiferromagnetically correlated electrons under the influence of an applied magnetic field. We obtain a phase diagram in a $T$-$\d$ plane for staggered magnetization under the external field. We find that away from half filling the maximum values of staggered magnetization occur with rapid convergence to a finite temperature constant near half filling. We discover the reentrant behavior of the staggered magnetization in the presence of the magnetic field.

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S. P. Hong, H. Doh, S. H. Suck Salk. 1996-09-24. Antiferromagnetic Correlation under the External Magnetic Field in the Hubbard Model. https://arxiv.org/abs/cond-mat/9609225

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