Magnetic susceptibility of the Hubbard model in the strong-correlation limit
Bao-Hua Zhao, Hui‐Quan Nie, Kaiyi Zhang +2 more
Using the fourth-order perturbation expansion, we have calculated the uniform and the staggered magnetic susceptibility of the $s$-band Hubbard model. The Curie and the N\'eel temperatures are derived and the magnetic phase diagrams are constructed. Our calculation improves on the earlier work of Kubo.
Physical review. B, Condensed matter•Aug 1, 1987•22 citations