Magnetization Plateau of the Distorted Diamond Spin Chain with Anisotropic Ferromagnetic Interaction
arXiv:2205.07027 · doi:10.1063/9.0000255
Abstract
The distorted diamond spin chain with the anisotropic ferromagnetic interaction is investigated using the numerical diagonalization and the level spectroscopy analysis. It is known that the system exhibits a plateau of the magnetization curve at the 1/3 of the saturation. The present study indicates that as the anisotropy is varied the quantum phase transition occurs between two different mechanisms of the 1/3 magnetization plateau. The phase diagram with respect to the anisotropy and the ferromagnetic coupling is also presented.