Order Parameters and Phase Diagram of Multiferroic RMn${}_2$O${}_5$

Abstract

The generic magnetic phase diagram of multiferroic RMn${}_2$O${}_5$ (with R=Y, Ho, Tb, Er, Tm), which allows different sequences of ordered magnetic structures for different R's and different control parameters, is described using order parameters which explicitly incorporate the magnetic symmetry. A phenomenological magneto-electric coupling is used to explain why some of these magnetic phases are also ferroelectric. Several new experiments, which can test this theory, are proposed.

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Cited by in corpus (12)

• Multiferroicity, The coupling between magnetic and polarization
• Evidence for large electric polarization from collinear magnetism in TmMnO3
• A Neutron diffraction study of multiferroics RMn2O5
• Electromagnons in multiferroic RMn2O5 compounds and their microscopic origin
• First-principles modeling of multferroic RMn${}_2$O${}_5$
• Complex Spin Structures and Origin of the Magneto-Electric Coupling in YMn2O5
• Effect of Inversion Symmetry on Incommensurate Order in Multiferroic RMn2O5, R=rare earth
• Magnetic excitations in the low-temperature ferroelectric phase of multiferroic YMn2O5 using inelastic neutron scattering
• Order Parameters and Phase Diagrams of Multiferroics
• Collinear order and chirality-reorientation transition in the Cairo pentagonal magnet Bi${}_4$Fe${}_5$O${}_{13}$F
• Experimentally Accessible Quantum Phase Transition in a non-Hermitian Tavis-Cummings Model Engineered with Two Drive Fields
• Theory of magnetic field-induced metaelectric critical end point in BiMn${}_2$O${}_5$