Magnetoelectrical control of nonreciprocal microwave response in a multiferroic helimagnet

Abstract

Control of physical property in terms of external fields is essential for contemporary technologies. The conductance can be controlled by a gate electric field in a field effect transistor, which is a main component of the integrated circuit. Optical phenomena induced by an electric field such as electroluminescence and electrochromism are useful for display and other technologies. Control of microwave propagation seems also imperative for future wireless communication technology. Microwave properties in solids are dominated mostly by magnetic excitations, which cannot be easily controlled by an electric field. One of the solutions for this problem is utilizing magnetically induced ferroelectrics (multiferroics). Here we show that microwave nonreciprocity, which is difference between oppositely propagating microwaves, can be reversed by the external electric field in a multiferroic helimagnet Ba${}_2$Mg${}_2$Fe${}_{12}$O${}_{22}$. This result offers a new avenue for the electrical control of microwave properties.

References in corpus (8)

• Spin current and magneto-electric effect in non-collinear magnets
• Magnetic inversion symmetry breaking and ferroelectricity in TbMnO3
• Possible evidence for electromagnons in multiferroic manganites
• Dynamical magneto-electric coupling in helical magnets
• 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
• Four-coloured Spin-wave Excitations in Multiferroic Materials
• Optical diode effect in the room-temperature multiferroic BiFeO$_3

Cited by in corpus (7)

• Microwave non-reciprocity of magnon excitations in a non-centrosymmetric antiferromagnet Ba${}_2$MnGe${}_2$O${}_7$
• Temperature-sensitive spin-wave nonreciprocity induced by interlayer dipolar coupling in ferromagnet/X (X=paramagnet, superconductor) hybrid systems
• Microwave directional dichroism resonant with spin excitations in the polar ferromagnet GaV${}_4$S${}_8$
• Optical excitation of electromagnons in hexaferrite
• Electrodynamics of magnetoelectric media and magnetoelectric fields
• Optical magnetoelectric effect in the polar honeycomb antiferromagnet Fe2Mo3O8
• Spin hydrodynamic generation in unsteady flows