Magnetochiral Dichroism in a Collinear Antiferromagnet with No Magnetization

Tatsuki Sato, Nobuyuki Abe, Shojiro Kimura, Yusuke Tokunaga, Taka Hisa Arima

Research output: Contribution to journalArticlepeer-review

4 Citations (Scopus)

Abstract

We show the directional dichroism in a collinear antiferromagnet MnTiO3. The dichroism between two distinctive antiferromagnetic states with opposite signs of staggered magnetic moments can be regarded as magnetochiral dichroism in the absence of external fields. Electric-field reversal of antiferromagnetic domain causes a change in the absorption intensity of unpolarized light around 2.15 eV. The difference in optical absorption between two antiferromagnetic states is reversed for the light propagating in the opposite direction. The absorption coefficient displays a hysteretic behavior for a cycle of sweeping the external electric or magnetic field.

Original languageEnglish
Article number21740217402
JournalPhysical review letters
Volume124
Issue number21
DOIs
Publication statusPublished - 2020 May 29

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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