Distinct spin and orbital dynamics in Sr(2)RuO(4)

The unconventional superconductor Sr(2)RuO(4) has long served as a benchmark for theories of correlated-electron materials. The determination of the superconducting pairing mechanism requires detailed experimental information on collective bosonic excitations as potential mediators of Cooper pairing...

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Autores principales: Suzuki, H., Wang, L., Bertinshaw, J., Strand, H. U. R., Käser, S., Krautloher, M., Yang, Z., Wentzell, N., Parcollet, O., Jerzembeck, F., Kikugawa, N., Mackenzie, A. P., Georges, A., Hansmann, P., Gretarsson, H., Keimer, B.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2023
Materias:
Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10624926/
https://www.ncbi.nlm.nih.gov/pubmed/37923750
http://dx.doi.org/10.1038/s41467-023-42804-3
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author Suzuki, H.
Wang, L.
Bertinshaw, J.
Strand, H. U. R.
Käser, S.
Krautloher, M.
Yang, Z.
Wentzell, N.
Parcollet, O.
Jerzembeck, F.
Kikugawa, N.
Mackenzie, A. P.
Georges, A.
Hansmann, P.
Gretarsson, H.
Keimer, B.
author_facet Suzuki, H.
Wang, L.
Bertinshaw, J.
Strand, H. U. R.
Käser, S.
Krautloher, M.
Yang, Z.
Wentzell, N.
Parcollet, O.
Jerzembeck, F.
Kikugawa, N.
Mackenzie, A. P.
Georges, A.
Hansmann, P.
Gretarsson, H.
Keimer, B.
author_sort Suzuki, H.
collection PubMed
description The unconventional superconductor Sr(2)RuO(4) has long served as a benchmark for theories of correlated-electron materials. The determination of the superconducting pairing mechanism requires detailed experimental information on collective bosonic excitations as potential mediators of Cooper pairing. We have used Ru L(3)-edge resonant inelastic x-ray scattering to obtain comprehensive maps of the electronic excitations of Sr(2)RuO(4) over the entire Brillouin zone. We observe multiple branches of dispersive spin and orbital excitations associated with distinctly different energy scales. The spin and orbital dynamical response functions calculated within the dynamical mean-field theory are in excellent agreement with the experimental data. Our results highlight the Hund metal nature of Sr(2)RuO(4) and provide key information for the understanding of its unconventional superconductivity.
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spelling pubmed-106249262023-11-05 Distinct spin and orbital dynamics in Sr(2)RuO(4) Suzuki, H. Wang, L. Bertinshaw, J. Strand, H. U. R. Käser, S. Krautloher, M. Yang, Z. Wentzell, N. Parcollet, O. Jerzembeck, F. Kikugawa, N. Mackenzie, A. P. Georges, A. Hansmann, P. Gretarsson, H. Keimer, B. Nat Commun Article The unconventional superconductor Sr(2)RuO(4) has long served as a benchmark for theories of correlated-electron materials. The determination of the superconducting pairing mechanism requires detailed experimental information on collective bosonic excitations as potential mediators of Cooper pairing. We have used Ru L(3)-edge resonant inelastic x-ray scattering to obtain comprehensive maps of the electronic excitations of Sr(2)RuO(4) over the entire Brillouin zone. We observe multiple branches of dispersive spin and orbital excitations associated with distinctly different energy scales. The spin and orbital dynamical response functions calculated within the dynamical mean-field theory are in excellent agreement with the experimental data. Our results highlight the Hund metal nature of Sr(2)RuO(4) and provide key information for the understanding of its unconventional superconductivity. Nature Publishing Group UK 2023-11-03 /pmc/articles/PMC10624926/ /pubmed/37923750 http://dx.doi.org/10.1038/s41467-023-42804-3 Text en © The Author(s) 2023 https://creativecommons.org/licenses/by/4.0/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 licence, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons licence 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 licence, visit http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) .
spellingShingle Article
Suzuki, H.
Wang, L.
Bertinshaw, J.
Strand, H. U. R.
Käser, S.
Krautloher, M.
Yang, Z.
Wentzell, N.
Parcollet, O.
Jerzembeck, F.
Kikugawa, N.
Mackenzie, A. P.
Georges, A.
Hansmann, P.
Gretarsson, H.
Keimer, B.
Distinct spin and orbital dynamics in Sr(2)RuO(4)
title Distinct spin and orbital dynamics in Sr(2)RuO(4)
title_full Distinct spin and orbital dynamics in Sr(2)RuO(4)
title_fullStr Distinct spin and orbital dynamics in Sr(2)RuO(4)
title_full_unstemmed Distinct spin and orbital dynamics in Sr(2)RuO(4)
title_short Distinct spin and orbital dynamics in Sr(2)RuO(4)
title_sort distinct spin and orbital dynamics in sr(2)ruo(4)
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10624926/
https://www.ncbi.nlm.nih.gov/pubmed/37923750
http://dx.doi.org/10.1038/s41467-023-42804-3
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