Variation of magnetic order for the 2-D systems of strongly correlated electrons with external magnetic field

Based on our earlier mean field approach (H. Doh et al., Phys. Rev. B 55 (1997) 14084), we present the variation of antiferromagnetic (staggered magnetization) order as a function of external magnetic field for the two-dimensional systems of strongly correlated electrons at half-filling. In the present work, we consider both the Zeeman and the Aharonov–Bohm effects in association with the Hubbard model. It is shown that the local minima of …