Sequences of Magnetic Field-Induced Phase Transitions in Frustrated Helimagnets of Low Symmetry

Explore the intricacies of magnetic field-induced phase transitions in frustrated helimagnets of low symmetry in this comprehensive lecture. Delve into the world of multiferroics of spin origin, materials that combine magnetic and ferroelectric order in the same phase, and their potential applications. Learn about the importance of helical magnetic structures in breaking inversion symmetry and allowing for nonzero electrical polarization. Examine a theoretical study on complicated sequences of magnetic field-induced phase transitions in three-dimensional anisotropic frustrated magnets at zero temperature. Discover how a low-symmetry model, which only allows magnetic structures with a single modulation vector, is treated analytically. Understand the interplay between exchange interaction, biaxial anisotropy, external magnetic field, and competition with commensurate orders in shaping the model's behavior. Gain insights into the successful application of this approach in describing five consecutive transitions observed in multiferroic MnWO4 for the external field along the easy axis. Compare the critical fields obtained through this analytical method with numerical results from other research teams.