Optical magnetoelectric effect in the polar honeycomb antiferromagnet Fe2Mo3O8

Abstract

The lack of both time-reversal and spatial inversion symmetry in polar magnets is a prerequisite for the occurrence of optical magnetoelectric effects such as nonreciprocal directional dichroism with the potential for the realization of optical diodes. In particular, antiferromagnetic materials with magnetic excitations in the THz range such as Fe2Mo3O8 are promising candidates for next-generation spintronic applications. In a combined experimental and theoretical effort we investigated the THz excitations of the polar honeycomb antiferromagnet Fe2Mo3O8 in external magnetic fields and their nonreciprocal directional dichroism, together with the temperature dependence of the electronic transitions in the mid- and near-infrared frequency range. Using an advanced single-ion approach for the Fe ions, we are able to describe optical excitations from the THz to the near-infrared frequency range quantitatively and successfully model the observed nonreciprocal directional dichroism in the THz regime.

References in corpus (33)

• Antiferromagnetic spintronics
• Antiferromagnetic opto-spintronics: Part of a collection of reviews on antiferromagnetic spintronics
• Giant directional dichroism of terahertz light in resonance with magnetic excitations of the multiferroic oxide BaCo${}_2$Ge${}_2$O${}_7$
• Chirality of Matter Shows Up via Spin Excitations
• Altermagnetism with Non-collinear Spins
• Unveiling hidden ferrimagnetism and giant magnetoelectricity in polar magnet Fe2Mo3O8
• Four-coloured Spin-wave Excitations in Multiferroic Materials
• Symmetry Conditions for Non-reciprocal Light Propagation in Magnetic Crystals
• Thermal Hall effect, spin Nernst effect, and spin density induced by thermal gradient in collinear ferrimagnets from magnon-phonon interaction
• Optical diode effect in the room-temperature multiferroic BiFeO$_3
• High-temperature terahertz optical diode effect without magnetic order in polar FeZnMo${}_3$O${}_8$
• Diagonal magnetoelectric susceptibility and effect of Fe-doping in a polar ferrimagnet Mn2Mo3O8
• Optical evidence for symmetry changes above the Neel temperature in KCuF3
• Structure, phonons, and orbital degrees of freedom in Fe${}_2$Mo${}_3$O${}_8$
• Magnetoelectric memory function with optical readout
• Electromagnon resonance in a collinear spin state of a polar antiferromagnet Fe2Mo3O8
• Singlet-triplet excitations and long range entanglement in the spin-orbital liquid candidate FeSc2S4
• Direct observation of topological magnon polarons in a multiferroic material
• Unidirectional terahertz light absorption in the pyroelectric ferrimagnet CaBaCo4O7
• Spectroscopic and first principle DFT+eDMFT study of complex structural, electronic, and vibrational properties of $M_2$Mo${}_3$O${}_8$ ($M$=Fe, Mn) polar magnets
• Magnetoelectrical control of nonreciprocal microwave response in a multiferroic helimagnet
• Giant directional birefringence in multiferroic ferroborate
• Picosecond creation of switchable optomagnets with giant photoinduced Kerr rotations in polar antiferromagnetic (Fe${}_{1-x}$Zn${}_x$)${}_2$Mo${}_3$O${}_8$
• Magnetization reversal through an antiferromagnetic state
• Nonreciprocal directional dichroism at telecom wavelengths
• Magnetic and vibronic THz excitations in Zn doped Fe${}_2$Mo${}_3$O${}_8$
• Phonon anomalies and charge dynamics in Fe_{1-x}Cu_{x}Cr_{2}S_{4} single crystals
• Directional dichroism in the paramagnetic state of multiferroics: a case study of infrared light absorption in Sr2CoSi2O7 at high temperatures
• Band-Mott mixing hybridizes the gap in Fe${}_2$Mo${}_3$O${}_8$
• Ordering of Fe and Zn ions and magnetic properties of FeZnMo3O8
• Zeeman and Davydov splitting of Frenkel excitons in the antiferromagnet CuB${}_2$O${}_4$
• Magneto-electric properties and low-energy excitations of multiferroic FeCr2S4
• In-situ electric field control of THz non-reciprocal directional dichroism in the multiferroic Ba${}_2$CoGe${}_2$O${}_7$

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