Ding, Lei ORCID: 0000-0002-1556-2095, Xu, Xianghan, Jeschke, Harald O., Bai, Xiaojian, Feng, Erxi, Alemayehu, Admasu Solomon, Kim, Jaewook, Huang, Fei-Ting, Zhang, Qiang ORCID: 0000-0003-0389-7039, Ding, Xiaxin, Harrison, Neil, Zapf, Vivien, Khomskii, Daniel, Mazin, Igor I., Cheong, Sang-Wook and Cao, Huibo (2021). Field-tunable toroidal moment in a chiral-lattice magnet. Nat. Commun., 12 (1). BERLIN: NATURE PORTFOLIO. ISSN 2041-1723

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Abstract

Ferrotoroidal order, which represents a spontaneous arrangement of toroidal moments, has recently been found in a few linear magnetoelectric materials. However, tuning toroidal moments in these materials is challenging. Here, we report switching between ferritoroidal and ferrotoroidal phases by a small magnetic field, in a chiral triangular-lattice magnet BaCoSiO4 with tri-spin vortices. Upon applying a magnetic field, we observe multi-stair metamagnetic transitions, characterized by equidistant steps in the net magnetic and toroidal moments. This highly unusual ferri-ferroic order appears to come as a result of an unusual hierarchy of frustrated isotropic exchange couplings revealed by first principle calculations, and the antisymmetric exchange interactions driven by the structural chirality. In contrast to the previously known toroidal materials identified via a linear magnetoelectric effect, BaCoSiO4 is a qualitatively new multiferroic with an unusual coupling between several different orders, and opens up new avenues for realizing easily tunable toroidal orders. Toroidal moments arise from vortex like spin arrangements. These moments can then interact, giving rise to ferri- or ferro-toroidal order, though controlling such order is difficult. Here, the authors demonstrate a ferri-toroidal state in BaCoSiO4, which under an applied magnetic field exhibits multiple toroidal and metamagnetic transitions.

Item Type: Journal Article
Creators:
CreatorsEmailORCIDORCID Put Code
Ding, LeiUNSPECIFIEDorcid.org/0000-0002-1556-2095UNSPECIFIED
Xu, XianghanUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Jeschke, Harald O.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Bai, XiaojianUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Feng, ErxiUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Alemayehu, Admasu SolomonUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Kim, JaewookUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Huang, Fei-TingUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Zhang, QiangUNSPECIFIEDorcid.org/0000-0003-0389-7039UNSPECIFIED
Ding, XiaxinUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Harrison, NeilUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Zapf, VivienUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Khomskii, DanielUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Mazin, Igor I.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Cheong, Sang-WookUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Cao, HuiboUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
URN: urn:nbn:de:hbz:38-596283
DOI: 10.1038/s41467-021-25657-6
Journal or Publication Title: Nat. Commun.
Volume: 12
Number: 1
Date: 2021
Publisher: NATURE PORTFOLIO
Place of Publication: BERLIN
ISSN: 2041-1723
Language: English
Faculty: Unspecified
Divisions: Unspecified
Subjects: no entry
Uncontrolled Keywords:
KeywordsLanguage
Multidisciplinary SciencesMultiple languages
URI: http://kups.ub.uni-koeln.de/id/eprint/59628

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