Microscopic origin of Magnetic Ferroelectrics in Nonlinear Multiferroics

Abstract

A simple but general microscopic mechanism to understand the interplay between the electric and magnetic degrees of freedom is developed. Within this mechanism, the magnetic structure generates an electric current which induce an counterbalance electric current from the spin orbital coupling. When the magnetic structure is described by a single order parameter, the electric polarization is determined by the single spin orbital coupling parameter, and the material is predicted to be a half insulator. This mechanism provides a simple estimation of the value of ferroelectricity and sets a physical limitation as well.

4 pages, 1 figure

References in corpus (4)

• Spin current and magneto-electric effect in non-collinear magnets
• Ferroelectricity in spiral magnets
• Role of the Dzyaloshinskii-Moriya interaction in multiferroic perovskites
• Dynamical magneto-electric coupling in helical magnets

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• Multiferroicity, The coupling between magnetic and polarization
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• Magnetoelectric effects in single crystals of the cubic ferrimagnetic helimagnet Cu2OSeO3
• Magnetic ordering and multiferroicity in MnI${}_2$
• Induced ferroelectric phases in TbMn_2O_5
• Landau model for the phase diagrams of the orthorhombic rare-earth manganites RMnO3
• Infrared reflectivity of the phonon spectra in multiferroic TbMnO3
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• Existence of a critical canting angle of magnetic moments to induce multiferroicity in the Haldane spin-chain system, Tb2BaNiO5
• Field dependent competing magnetic ordering in multiferroic Ni3V2O8
• Giant Magneto-electric Effect in the Novel Mott Insulator, Sr2IrO4
• An Effective Model of Magnetoelectricity in Multiferroics $RM{n}_2{O}_5$
• Microscopic evidence of spin-driven multiferroicity and topological spin textures in monolayer NiI2
• Bond distortion effects and electric orders in spiral multiferroic magnets
• Elastic and magnetoelastic properties of TbMnO3 single crystal by nanosecond time resolved acoustics and first-principles calculations
• Canting angle behavior of magnetic moments in Y- substituted Tb2BaNiO5 and its relevance for magnetoelectric coupling
• Large Magnetoelectric Response in Sr2IrO4/SrTiO3 superlattices with non-equivalent interfaces