Observation of electromagnon excitations in the BiFe0${}_3$ spiral magnet

Abstract

Recently, oxide multiferroics have attracted much attention due to their large magnetoelectric effect which allows the tuning of magnetic properties with electric field and vice versa and open new venues for future spintronic applications such as multiple-state memory devices with dual magnetic and electric control. BiFeO${}_3$ (BFO) belongs to this new class of materials and shows both ferroelectric and antiferromagnetic orders at room temperature with a large electric polarizationassociated with a cycloidal spiral magnetic ordering. The incommensurate magnetic order induces magnon zone folding and allows investigations by optical probes of unusual spin waves which couples to optical phonons, the so called "`electromagnons"'. Here, we unravel for the first time the electromagnon spectra of BFO by means low energy inelastic light scattering technique. We show the existence of two species of electromagnons corresponding to spin wave excitations in and out of the cycloidal plane. The present observations present an unique opportunity to study the interplay between ferroelectric and magnetic orders.

References in corpus (9)

• Very large spontaneous electric polarization in BiFeO3 single crystals at room temperature and its evolution under cycling fields
• Room temperature coexistence of large electric polarization and magnetic order in BiFeO3 single crystals
• Electric-field-induced spin-flop in BiFeO3 single crystals at room-temperature
• Infrared and THz studies of polar phonons and improper magnetodielectric effect in multiferroic BFO3 ceramics
• Dynamical magneto-electric coupling in helical magnets
• Electromagnons in multiferroic YMn2O5 and TbMn2O5
• Infrared phonon dynamics of multiferroic BiFeO3 single crystal
• Electric field effect on BiFeO${}_3$ single crystal investigated by Raman spectroscopy
• Optical coupling to spin waves in the cycloidal multiferroic BiFeO3

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