Long-range magnetic interaction and frustration in double perovskites Sr(2)NiIrO(6) and Sr(2)ZnIrO(6)

One often counts the nearest neighbouring (NN) exchange interactions for understanding of a magnetic insulator. Here we present first-principles calculations for the newly synthesized double perovskites Sr(2)NiIrO(6) and Sr(2)ZnIrO(6), and we find that the 2NN Ir-Ir antiferromagnetic coupling is eve...

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Detalles Bibliográficos
Autores principales: Ou, Xuedong, Li, Zhengwei, Fan, Fengren, Wang, Hongbo, Wu, Hua
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group 2014
Materias:
Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4269887/
https://www.ncbi.nlm.nih.gov/pubmed/25519762
http://dx.doi.org/10.1038/srep07542
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author Ou, Xuedong
Li, Zhengwei
Fan, Fengren
Wang, Hongbo
Wu, Hua
author_facet Ou, Xuedong
Li, Zhengwei
Fan, Fengren
Wang, Hongbo
Wu, Hua
author_sort Ou, Xuedong
collection PubMed
description One often counts the nearest neighbouring (NN) exchange interactions for understanding of a magnetic insulator. Here we present first-principles calculations for the newly synthesized double perovskites Sr(2)NiIrO(6) and Sr(2)ZnIrO(6), and we find that the 2NN Ir-Ir antiferromagnetic coupling is even stronger than the 1NN Ni-Ir ferromagnetic one. Thus, the leading antiferromagnetic interactions in the fcc Ir sublattice give rise to a magnetic frustration. Sr(2)NiIrO(6) and Sr(2)ZnIrO(6) hence appear very similarly as a distorted low-temperature antiferromagnet (probably, of type III). This work highlights the long-range magnetic interactions of the delocalized 5d electrons, and it also addresses why the spin-orbit coupling is ineffective here.
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spelling pubmed-42698872014-12-30 Long-range magnetic interaction and frustration in double perovskites Sr(2)NiIrO(6) and Sr(2)ZnIrO(6) Ou, Xuedong Li, Zhengwei Fan, Fengren Wang, Hongbo Wu, Hua Sci Rep Article One often counts the nearest neighbouring (NN) exchange interactions for understanding of a magnetic insulator. Here we present first-principles calculations for the newly synthesized double perovskites Sr(2)NiIrO(6) and Sr(2)ZnIrO(6), and we find that the 2NN Ir-Ir antiferromagnetic coupling is even stronger than the 1NN Ni-Ir ferromagnetic one. Thus, the leading antiferromagnetic interactions in the fcc Ir sublattice give rise to a magnetic frustration. Sr(2)NiIrO(6) and Sr(2)ZnIrO(6) hence appear very similarly as a distorted low-temperature antiferromagnet (probably, of type III). This work highlights the long-range magnetic interactions of the delocalized 5d electrons, and it also addresses why the spin-orbit coupling is ineffective here. Nature Publishing Group 2014-12-18 /pmc/articles/PMC4269887/ /pubmed/25519762 http://dx.doi.org/10.1038/srep07542 Text en Copyright © 2014, Macmillan Publishers Limited. All rights reserved http://creativecommons.org/licenses/by-nc-nd/4.0/ This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivs 4.0 International License. The images or other third party material in this article are included in the article's Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder in order to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by-nc-nd/4.0/
spellingShingle Article
Ou, Xuedong
Li, Zhengwei
Fan, Fengren
Wang, Hongbo
Wu, Hua
Long-range magnetic interaction and frustration in double perovskites Sr(2)NiIrO(6) and Sr(2)ZnIrO(6)
title Long-range magnetic interaction and frustration in double perovskites Sr(2)NiIrO(6) and Sr(2)ZnIrO(6)
title_full Long-range magnetic interaction and frustration in double perovskites Sr(2)NiIrO(6) and Sr(2)ZnIrO(6)
title_fullStr Long-range magnetic interaction and frustration in double perovskites Sr(2)NiIrO(6) and Sr(2)ZnIrO(6)
title_full_unstemmed Long-range magnetic interaction and frustration in double perovskites Sr(2)NiIrO(6) and Sr(2)ZnIrO(6)
title_short Long-range magnetic interaction and frustration in double perovskites Sr(2)NiIrO(6) and Sr(2)ZnIrO(6)
title_sort long-range magnetic interaction and frustration in double perovskites sr(2)niiro(6) and sr(2)zniro(6)
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4269887/
https://www.ncbi.nlm.nih.gov/pubmed/25519762
http://dx.doi.org/10.1038/srep07542
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