Manipulation of electric polarization with rotating magnetic field in a honeycomb antiferromagnet Co 4 Nb 2 O 9

N. D. Khanh, N. Abe, S. Kimura, Y. Tokunaga, T. Arima

Research output: Contribution to journalArticlepeer-review

24 Citations (Scopus)

Abstract

Honeycomb-based materials have been attracting a lot of attention owing to their fascinating physics as exemplified by the emergence of a massless Dirac fermion and a spin liquid state. We have investigated magnetoelectric (ME) phenomena in a honeycomb magnet Co4Nb2O9 and observed a unique ME response associated with a simple antiferromagnetic ordering on the honeycomb network. The induced electric polarization changes its direction by an angle -2θ around the trigonal axis upon rotating the magnetic field by an angle θ. We attribute the variation of electric polarization direction in a rotating magnetic field to the continuous rotation of the magnetic moment on the honeycomb. Our findings may open a variety of novel ME responses based on a honeycomb magnet.

Original languageEnglish
Article number094434
JournalPhysical Review B
Volume96
Issue number9
DOIs
Publication statusPublished - 2017 Sep 27

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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