Long wavelength magnetic and magnetoelectric excitations in the ferroelectric antiferromagnet BiFeO3

Abstract

We present a terahertz spectroscopic study of magnetic excitations in ferroelectric antiferromagnet BiFeO3. We interpret the observed spectrum of long-wavelength magnetic resonance modes in terms of the normal modes of the material's cycloidal antiferromagnetic structure. We find that the modulated Dzyaloshinski-Moriya interaction leads to a splitting of the out-of-plane resonance modes. We also assign one of the observed absorption lines to an electromagnon excitation that results from the magnetoelectric coupling between the ferroelectric polarization and the cycloidal magnetic structure of BiFeO3.

References in corpus (7)

• Very large spontaneous electric polarization in BiFeO3 single crystals at room temperature and its evolution under cycling fields
• Electric-field-induced spin-flop in BiFeO3 single crystals at room-temperature
• Origin of electromagnon excitations in \textit{R}MnO${}_3$
• Optical coupling to spin waves in the cycloidal multiferroic BiFeO3
• Singe ferroelectric and chiral magnetic domain of single-crystalline BiFeO${}_3$ in an electric field
• Terahertz spectroscopy of electromagnons in Eu_{1-x}Y_xMnO_3
• Terahertz wave generation via optical rectification from multiferroic BiFeO3

Cited by in corpus (27)

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• Temperature-Dependent Interplay of Dzyaloshinskii-Moriya Interaction and Single-Ion Anisotropy in Multiferroic BiFeO${}_3$
• The Spin State and Spectroscopic Modes of Multiferroic BiFeO3
• Driving spin excitations by hydrostatic pressure in BiFeO3
• Cavity magnon-polaritons in cuprate parent compounds
• Spin and lattice excitations of a BiFeO3 thin film and ceramics
• Field dependence of the Spin State and Spectroscopic Modes of Multiferroic BiFeO${}_3$
• Ultrafast Light-driven Simultaneous Excitation of Coherent Terahertz Magnons and Phonons in Multiferroic BiFeO${}_3$
• Identifying the Magnetoelectric Modes of Multiferroic BiFeO${}_3$
• Spin-Induced Polarizations and Non-Reciprocal Directional Dichroism of Multiferroic BiFeO${}_3$
• Terahertz and infrared spectroscopic evidence of phonon-paramagnon coupling in hexagonal piezomagnetic YMnO3
• Normal Modes of a Spin Cycloid or Helix
• Electromagnon in ferrimagnetic eps-Fe2O3 nanograin ceramics
• The Magnetoelastic Distortion of Multiferroic BiFeO${}_3$ in the Canted Antiferromagnetic State
• Pinning, Rotation, and Metastability of BiFeO${}_3$ Cycloidal Domains in a Magnetic Field
• Ultrafast near infrared photoinduced absorption in a multiferroic single crystal of bismuth ferrite
• Orientation Dependence of the Critical Magnetic Field for Multiferroic BiFeO${}_3$
• Exceptional field dependence of antiferromagnetic magnons in LiFePO${}_4$
• Selection rules and dynamic magnetoelectric effect of the spin waves in multiferroic BiFeO${}_3$
• Electronic control of magnonic and spintronic devices
• Sub-millimeter propagation of antiferromagnetic magnons via magnon-photon coupling
• Observation of quasi-elastic light scattering in BiFeO${}_3$