Microwave directional dichroism resonant with spin excitations in the polar ferromagnet GaV${}_4$S${}_8$

Abstract

We have investigated the directional dichroism of magnetic resonance spectra in the polar ferromagnet GaV${}_4$S${}_8$. While four types of structural domains are energetically degenerated under zero field, the magnetic resonance for each domain is well separated by applying magnetic fields due to uniaxial magnetic anisotropy. Consequently, the directional dichroism as large as 20 % is clearly observed without domain cancellation. The present observation therefore demonstrates that not only magnetoelectric mono-domain crystals but also magnetoelectric multi-domain specimens can be used to realize microwave (optical) diodes owing to the lack of inversion domains.

References in corpus (1)

• Characteristics of ferroelectric-ferroelastic domains in N{é}el-type skyrmion host GaV${}_4$S${}_8$

Cited by in corpus (3)

• Spin excitations of magnetoelectric LiNiPO${}_4$ in multiple magnetic phases
• Magnetic phase transitions and spin density distribution in the molecular multiferroic GaV${}_4$S${}_8$ system
• Establishing magneto-structural relationships in the solid solutions of the skyrmion hosting family of materials: GaV${}_4$S${}_{8-y}$Se${}_y$