Scientific article
English

Raman spectroscopic evidence for multiferroicity in rare earth nickelate single crystals

Published inPhysical Review Research, vol. 3, no. 033007
Publication date2021
Abstract

The rare earth nickelates RNiO3 are metallic at high temperatures and insulating and magnetically ordered at low temperatures. The low temperature phase has been predicted to be type II multiferroic, i.e., ferroelectricand magnetic order are coupled and occur simultaneously. Confirmation of those ideas has been inhibited bythe absence of experimental data on single crystals. Here we report on Raman spectroscopic data of RNiO3 single crystals (R=Y, Er, Ho, Dy, Sm, Nd) for temperatures between 10 and 1000 K. Entering the magnetically ordered phase we observe the appearance of a large number of additional vibrational modes, implying a breaking of inversion symmetry expected for multiferroic order.

Citation (ISO format)
ARDIZZONE, Ivan et al. Raman spectroscopic evidence for multiferroicity in rare earth nickelate single crystals. In: Physical Review Research, 2021, vol. 3, n° 033007. doi: 10.1103/PhysRevResearch.3.033007
Main files (1)
Article (Published version)
accessLevelRestricted
Identifiers
Journal ISSN2643-1564
302views
2downloads

Technical informations

Creation02/07/2021 20:22:00
First validation02/07/2021 20:22:00
Update time16/03/2023 01:50:33
Status update16/03/2023 01:50:33
Last indexation31/10/2024 23:28:13
All rights reserved by Archive ouverte UNIGE and the University of GenevaunigeBlack