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Effects of Ni/Co doping on structural and electronic properties of 122 and 112 families of Eu based iron pnictides
Superconductivity in high-temperature superconductors such as cuprates or iron pnictides is typically achieved by hole or electron doping and it is of great interest to understand how doping affects their properties leading to superconductivity. To study it we conducted Fe and As K edge x-ray absorp...
Autores principales: | , , , , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
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Nature Publishing Group UK
2023
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10423243/ https://www.ncbi.nlm.nih.gov/pubmed/37573469 http://dx.doi.org/10.1038/s41598-023-40419-8 |
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author | Stępień, Joanna Rybicki, Damian Sikora, Marcin Bukowski, Zbigniew Babij, Michał Gondek, Łukasz Kapusta, Czesław Strączek, Tomasz Goc, Kamil Oliveira De Souza, Danilo |
author_facet | Stępień, Joanna Rybicki, Damian Sikora, Marcin Bukowski, Zbigniew Babij, Michał Gondek, Łukasz Kapusta, Czesław Strączek, Tomasz Goc, Kamil Oliveira De Souza, Danilo |
author_sort | Stępień, Joanna |
collection | PubMed |
description | Superconductivity in high-temperature superconductors such as cuprates or iron pnictides is typically achieved by hole or electron doping and it is of great interest to understand how doping affects their properties leading to superconductivity. To study it we conducted Fe and As K edge x-ray absorption spectroscopy measurements on several electron doped compounds from the 112 and 122 family of Eu-based iron pnictides. XANES and EXAFS results confirm that dopants are located at expected sites. For both families we found an electron charge redistribution between As and Fe occurring with doping. The changes it caused are stronger in the 112 family and they are bigger at As sites, which indicates that doped charges are predominantly localized on the dopant site. However, the results obtained do not provide clues why Ni doping in 122 family does not lead to occurrence of superconductivity. |
format | Online Article Text |
id | pubmed-10423243 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2023 |
publisher | Nature Publishing Group UK |
record_format | MEDLINE/PubMed |
spelling | pubmed-104232432023-08-14 Effects of Ni/Co doping on structural and electronic properties of 122 and 112 families of Eu based iron pnictides Stępień, Joanna Rybicki, Damian Sikora, Marcin Bukowski, Zbigniew Babij, Michał Gondek, Łukasz Kapusta, Czesław Strączek, Tomasz Goc, Kamil Oliveira De Souza, Danilo Sci Rep Article Superconductivity in high-temperature superconductors such as cuprates or iron pnictides is typically achieved by hole or electron doping and it is of great interest to understand how doping affects their properties leading to superconductivity. To study it we conducted Fe and As K edge x-ray absorption spectroscopy measurements on several electron doped compounds from the 112 and 122 family of Eu-based iron pnictides. XANES and EXAFS results confirm that dopants are located at expected sites. For both families we found an electron charge redistribution between As and Fe occurring with doping. The changes it caused are stronger in the 112 family and they are bigger at As sites, which indicates that doped charges are predominantly localized on the dopant site. However, the results obtained do not provide clues why Ni doping in 122 family does not lead to occurrence of superconductivity. Nature Publishing Group UK 2023-08-12 /pmc/articles/PMC10423243/ /pubmed/37573469 http://dx.doi.org/10.1038/s41598-023-40419-8 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 Stępień, Joanna Rybicki, Damian Sikora, Marcin Bukowski, Zbigniew Babij, Michał Gondek, Łukasz Kapusta, Czesław Strączek, Tomasz Goc, Kamil Oliveira De Souza, Danilo Effects of Ni/Co doping on structural and electronic properties of 122 and 112 families of Eu based iron pnictides |
title | Effects of Ni/Co doping on structural and electronic properties of 122 and 112 families of Eu based iron pnictides |
title_full | Effects of Ni/Co doping on structural and electronic properties of 122 and 112 families of Eu based iron pnictides |
title_fullStr | Effects of Ni/Co doping on structural and electronic properties of 122 and 112 families of Eu based iron pnictides |
title_full_unstemmed | Effects of Ni/Co doping on structural and electronic properties of 122 and 112 families of Eu based iron pnictides |
title_short | Effects of Ni/Co doping on structural and electronic properties of 122 and 112 families of Eu based iron pnictides |
title_sort | effects of ni/co doping on structural and electronic properties of 122 and 112 families of eu based iron pnictides |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10423243/ https://www.ncbi.nlm.nih.gov/pubmed/37573469 http://dx.doi.org/10.1038/s41598-023-40419-8 |
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