Phase competition in frustrated anisotropic antiferromagnet in strong magnetic field

Abstract

We discuss theoretically a frustrated Heisenberg antiferromagnet in magnetic field close to the saturation one. It is demonstrated that a small biaxial anisotropy and/or the magnetic dipolar interaction produce a delicate balance between phases with a commensurate canted, incommensurate helical (conical), and fan spin orderings. As a result, different sequences of phase transitions are realized depending on values of these small anisotropic interactions. We derive analytical expressions for critical fields and ground-state energies of the phases which are in a quantitative agreement with our and previous Monte-Carlo simulations.

arXiv comment10 pages, 2 figures

References in corpus (13)

• Spin current and magneto-electric effect in non-collinear magnets
• Multiferroic materials and magnetoelectric physics: symmetry, entanglement, excitation, and topology
• Cubic magnets with Dzyaloshinskii-Moriya interaction at low T
• Magnetic-field induced competition of two multiferroic orders in a triangular-lattice helimagnet MnI2
• Magnon BEC and various phases of 3D quantum helimagnets under high magnetic field
• Static properties of a quasi one-dimensional antiferromagnet in magnetic field
• Helicity, anisotropies and their competition in a multiferroic magnet: insight from the phase diagram
• Magnetic field induced phases in anisotropic triangular antiferromagnets: application to $\mathrm{CuCr}{\mathrm{O}}_2$
• Cascades of phase transitions in spiral magnets caused by dipolar forces
• Formation of spiral ordering by magnetic field in frustrated anisotropic antiferromagnets
• Spin glass state and enhanced spiral phase in doped delafossite oxide CuCrO2
• Spiral plane flops in frustrated helimagnets in external magnetic field
• Control of multiferroic order by magnetic field in frustrated helimagnet MnI${}_2$. Theory

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• Thermodynamic theory of square skyrmion lattice in tetragonal frustrated antiferromagnets
• Magnons in the fan phase of anisotropic frustrated antiferromagnets