Critical Properties and Phase Transitions of the Mixed-Spin Anisotropic XXZ Heisenberg Model
Year: 2025
Type: article
Abstract: Using the Oguchi approximation, we have examined the magnetic properties of a mixed-spin (1/2, 1) XXZ Heisenberg model with a crystal field. The focus is on the 3D Heisenberg system, for which the phase diagrams and magnetizations are obtained numerically. It is found that the model features second- and first-order phase transition lines, as well as tricritical and critical end-points. The critical behavior is discussed and compared with previous works on Heisenberg systems.
Source: Romanian Journal of Physics
Institutions: Université Sultan Moulay Slimane, Chouaib Doukkali University
Language: English
Subfield: Condensed Matter Physics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: bronze
OpenAlex ID: W4408994194