Identification of Antiferromagnetic Domains Via the Optical Magnetoelectric Effect

Vilmos Kocsis, K. Penc, Toomas Rõõm, Urmas Nagel, Jakub Vít, Judit Romhányi, Yusuke Tokunaga, Yasujiro Taguchi, Yoshinori Tokura, I. Kézsmárki, Sándor Bordács

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

The ultimate goal of multiferroic research is the development of a new-generation nonvolatile memory devices, where magnetic bits are controlled via electric fields with low energy consumption. Here, we demonstrate the optical identification of magnetoelectric (ME) antiferromagnetic (AFM) domains in the LiCoPO4 exploiting the strong absorption difference between the domains. This unusual contrast, also present in zero magnetic field, is attributed to the dynamic ME effect of the spin-wave excitations, as confirmed by our microscopic model, which also captures the characteristics of the observed static ME effect. The control and the optical readout of AFM/ME domains, demonstrated here, will likely promote the development of ME and spintronic devices based on AFM insulators.

Original languageEnglish
Article number057601
JournalPhysical Review Letters
Volume121
Issue number5
DOIs
Publication statusPublished - Aug 1 2018

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wave excitation
energy consumption
magnons
readout
insulators
electric fields
magnetic fields

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

Identification of Antiferromagnetic Domains Via the Optical Magnetoelectric Effect. / Kocsis, Vilmos; Penc, K.; Rõõm, Toomas; Nagel, Urmas; Vít, Jakub; Romhányi, Judit; Tokunaga, Yusuke; Taguchi, Yasujiro; Tokura, Yoshinori; Kézsmárki, I.; Bordács, Sándor.

In: Physical Review Letters, Vol. 121, No. 5, 057601, 01.08.2018.

Research output: Contribution to journalArticle

Kocsis, V, Penc, K, Rõõm, T, Nagel, U, Vít, J, Romhányi, J, Tokunaga, Y, Taguchi, Y, Tokura, Y, Kézsmárki, I & Bordács, S 2018, 'Identification of Antiferromagnetic Domains Via the Optical Magnetoelectric Effect', Physical Review Letters, vol. 121, no. 5, 057601. https://doi.org/10.1103/PhysRevLett.121.057601
Kocsis, Vilmos ; Penc, K. ; Rõõm, Toomas ; Nagel, Urmas ; Vít, Jakub ; Romhányi, Judit ; Tokunaga, Yusuke ; Taguchi, Yasujiro ; Tokura, Yoshinori ; Kézsmárki, I. ; Bordács, Sándor. / Identification of Antiferromagnetic Domains Via the Optical Magnetoelectric Effect. In: Physical Review Letters. 2018 ; Vol. 121, No. 5.
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