Cargando…
Magnetism in iridate heterostructures leveraged by structural distortions
Fundamental control of magnetic coupling through heterostructure morphology is a prerequisite for rational engineering of magnetic ground states. We report the tuning of magnetic interactions in superlattices composed of single and bilayers of SrIrO(3) inter-spaced with SrTiO(3) in analogy to the Ru...
Autores principales: | , , , , , , , , , , , , , , , , , , , , |
---|---|
Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Nature Publishing Group UK
2019
|
Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6414659/ https://www.ncbi.nlm.nih.gov/pubmed/30862782 http://dx.doi.org/10.1038/s41598-019-39422-9 |
_version_ | 1783403017899343872 |
---|---|
author | Meyers, D. Cao, Yue Fabbris, G. Robinson, Neil J. Hao, Lin Frederick, C. Traynor, N. Yang, J. Lin, Jiaqi Upton, M. H. Casa, D. Kim, Jong-Woo Gog, T. Karapetrova, E. Choi, Yongseong Haskel, D. Ryan, P. J. Horak, Lukas Liu, X. Liu, Jian Dean, M. P. M. |
author_facet | Meyers, D. Cao, Yue Fabbris, G. Robinson, Neil J. Hao, Lin Frederick, C. Traynor, N. Yang, J. Lin, Jiaqi Upton, M. H. Casa, D. Kim, Jong-Woo Gog, T. Karapetrova, E. Choi, Yongseong Haskel, D. Ryan, P. J. Horak, Lukas Liu, X. Liu, Jian Dean, M. P. M. |
author_sort | Meyers, D. |
collection | PubMed |
description | Fundamental control of magnetic coupling through heterostructure morphology is a prerequisite for rational engineering of magnetic ground states. We report the tuning of magnetic interactions in superlattices composed of single and bilayers of SrIrO(3) inter-spaced with SrTiO(3) in analogy to the Ruddlesden-Popper series iridates. Magnetic scattering shows predominately c-axis antiferromagnetic orientation of the magnetic moments for the bilayer, as in Sr(3)Ir(2)O(7). However, the magnetic excitation gap, measured by resonant inelastic x-ray scattering, is quite different between the two structures, evidencing a significant change in the stability of the competing magnetic phases. In contrast, the single layer iridate hosts a more bulk-like gap. We find these changes are driven by bending of the c-axis Ir-O-Ir bond, which is much weaker in the single layer, and subsequent local environment changes, evidenced through x-ray diffraction and magnetic excitation modeling. Our findings demonstrate how large changes in the magnetic interactions can be tailored and probed in spin-orbit coupled heterostructures by engineering subtle structural modulations. |
format | Online Article Text |
id | pubmed-6414659 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2019 |
publisher | Nature Publishing Group UK |
record_format | MEDLINE/PubMed |
spelling | pubmed-64146592019-03-14 Magnetism in iridate heterostructures leveraged by structural distortions Meyers, D. Cao, Yue Fabbris, G. Robinson, Neil J. Hao, Lin Frederick, C. Traynor, N. Yang, J. Lin, Jiaqi Upton, M. H. Casa, D. Kim, Jong-Woo Gog, T. Karapetrova, E. Choi, Yongseong Haskel, D. Ryan, P. J. Horak, Lukas Liu, X. Liu, Jian Dean, M. P. M. Sci Rep Article Fundamental control of magnetic coupling through heterostructure morphology is a prerequisite for rational engineering of magnetic ground states. We report the tuning of magnetic interactions in superlattices composed of single and bilayers of SrIrO(3) inter-spaced with SrTiO(3) in analogy to the Ruddlesden-Popper series iridates. Magnetic scattering shows predominately c-axis antiferromagnetic orientation of the magnetic moments for the bilayer, as in Sr(3)Ir(2)O(7). However, the magnetic excitation gap, measured by resonant inelastic x-ray scattering, is quite different between the two structures, evidencing a significant change in the stability of the competing magnetic phases. In contrast, the single layer iridate hosts a more bulk-like gap. We find these changes are driven by bending of the c-axis Ir-O-Ir bond, which is much weaker in the single layer, and subsequent local environment changes, evidenced through x-ray diffraction and magnetic excitation modeling. Our findings demonstrate how large changes in the magnetic interactions can be tailored and probed in spin-orbit coupled heterostructures by engineering subtle structural modulations. Nature Publishing Group UK 2019-03-12 /pmc/articles/PMC6414659/ /pubmed/30862782 http://dx.doi.org/10.1038/s41598-019-39422-9 Text en © The Author(s) 2019 Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/. |
spellingShingle | Article Meyers, D. Cao, Yue Fabbris, G. Robinson, Neil J. Hao, Lin Frederick, C. Traynor, N. Yang, J. Lin, Jiaqi Upton, M. H. Casa, D. Kim, Jong-Woo Gog, T. Karapetrova, E. Choi, Yongseong Haskel, D. Ryan, P. J. Horak, Lukas Liu, X. Liu, Jian Dean, M. P. M. Magnetism in iridate heterostructures leveraged by structural distortions |
title | Magnetism in iridate heterostructures leveraged by structural distortions |
title_full | Magnetism in iridate heterostructures leveraged by structural distortions |
title_fullStr | Magnetism in iridate heterostructures leveraged by structural distortions |
title_full_unstemmed | Magnetism in iridate heterostructures leveraged by structural distortions |
title_short | Magnetism in iridate heterostructures leveraged by structural distortions |
title_sort | magnetism in iridate heterostructures leveraged by structural distortions |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6414659/ https://www.ncbi.nlm.nih.gov/pubmed/30862782 http://dx.doi.org/10.1038/s41598-019-39422-9 |
work_keys_str_mv | AT meyersd magnetisminiridateheterostructuresleveragedbystructuraldistortions AT caoyue magnetisminiridateheterostructuresleveragedbystructuraldistortions AT fabbrisg magnetisminiridateheterostructuresleveragedbystructuraldistortions AT robinsonneilj magnetisminiridateheterostructuresleveragedbystructuraldistortions AT haolin magnetisminiridateheterostructuresleveragedbystructuraldistortions AT frederickc magnetisminiridateheterostructuresleveragedbystructuraldistortions AT traynorn magnetisminiridateheterostructuresleveragedbystructuraldistortions AT yangj magnetisminiridateheterostructuresleveragedbystructuraldistortions AT linjiaqi magnetisminiridateheterostructuresleveragedbystructuraldistortions AT uptonmh magnetisminiridateheterostructuresleveragedbystructuraldistortions AT casad magnetisminiridateheterostructuresleveragedbystructuraldistortions AT kimjongwoo magnetisminiridateheterostructuresleveragedbystructuraldistortions AT gogt magnetisminiridateheterostructuresleveragedbystructuraldistortions AT karapetrovae magnetisminiridateheterostructuresleveragedbystructuraldistortions AT choiyongseong magnetisminiridateheterostructuresleveragedbystructuraldistortions AT haskeld magnetisminiridateheterostructuresleveragedbystructuraldistortions AT ryanpj magnetisminiridateheterostructuresleveragedbystructuraldistortions AT horaklukas magnetisminiridateheterostructuresleveragedbystructuraldistortions AT liux magnetisminiridateheterostructuresleveragedbystructuraldistortions AT liujian magnetisminiridateheterostructuresleveragedbystructuraldistortions AT deanmpm magnetisminiridateheterostructuresleveragedbystructuraldistortions |