Spin-polarization coupling in multiferroic transition-metal oxides

Abstract

A systematic microscopic theory of magnetically induced ferroelectricity and lattice modulation is presented for all electron configurations of Mott-insulating transition-metal oxides. Various mechanisms of polarization are identified in terms of a strong-coupling perturbation theory. Especially, the spin-orbit interaction acting on the ligand p orbitals is shown to give the ferroelectric polarization of the spin-current form, which plays a crucial role particularly in eg systems. Semiquantitative agreements with the multiferroic TbMnO3 are obtained. Predictions for X-ray and neutron scattering experiments are proposed to clarify the microscopic mechanism of the spin-polarization coupling in different materials.

References in corpus (5)

• Spin current and magneto-electric effect in non-collinear magnets
• Role of the Dzyaloshinskii-Moriya interaction in multiferroic perovskites
• Magnetically driven ferroelectric order in Ni${}_3$V${}_2$O${}_8$
• Ferroelectricity in the Magnetic E-Phase of Orthorhombic Perovskites
• Ferroelectric polarization flop in a frustrated magnet MnWO${}_4$ induced by magnetic fields

Cited by in corpus (15)

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• Correlation between spin helicity and electric polarization vector in quantum-spin chain magnet LiCu${}_2$O${}_2$
• Origin of the multiferroic spiral spin-order in the RMnO3 perovskites
• A Neutron diffraction study of multiferroics RMn2O5
• Electric Polarization Induced by a Proper Helical Magnetic Ordering in a Delafossite Multiferroic CuFe1-xAlxO2
• Electromagnons in multiferroic RMn2O5 compounds and their microscopic origin
• Terahertz time-domain spectroscopy of electromagnons in multiferroic perovskite manganites
• Microscopic mechanisms of spin-dependent electric polarization in 3d oxides
• Nematic and chiral orders for planar spins on triangular lattice
• Identification of microscopic spin-polarization coupling in the ferroelectric phase of a magnetoelectric multiferroic CuFe1-xAlxO2
• The incommensurate magnetic structure of YMn2O5: a stringent test of the multiferroic mechanism
• Multiferroicity due to nonstoichiometry in the chain cuprate LiVCuO_4
• Magnetic field induced transitions in multiferroic TbMnO3 probed by resonant and non-resonant X-ray diffraction
• Dynamical magnetoelectric effects induced by the Dzyaloshinskii-Moriya interaction in multiferroics
• Quantum Dynamics of Multiferroic Helimagnets: a Schwinger-Boson Approach