Microwave Directional Dichroism Resonant with Spin Excitations in the Polar Ferromagnet GaV4 S8

Y. Okamura, S. Seki, S. Bordács, Butykai, V. Tsurkan, I. Kézsmárki, Y. Tokura

Research output: Article

5 Citations (Scopus)

Abstract

We have investigated the directional dichroism of magnetic resonance spectra in the polar ferromagnet GaV4S8. While four types of structural domains are energetically degenerated under a zero field, the magnetic resonance for each domain is well separated by applying magnetic fields due to uniaxial magnetic anisotropy. Consequently, a directional dichroism as large as 20% is clearly observed without domain cancellation. The present observation therefore demonstrates that not only magnetoelectric monodomain crystals but also magnetoelectric multidomain specimens can be used to realize microwave (optical) diodes owing to the lack of inversion domains.

Original languageEnglish
Article number057202
JournalPhysical review letters
Volume122
Issue number5
DOIs
Publication statusPublished - febr. 6 2019

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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