Tracking aluminium impurities in single crystals of the heavy-fermion superconductor UBe(13)

The influence of Al incorporation on the heavy fermion superconductor UBe(13) was investigated to explain the sample dependence of physical properties. Clear evidence for incorporated Al in flux-grown UBe(13) single crystals is presented by results from X-ray diffraction, nuclear magnetic resonance...

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Autores principales: Amon, Alfred, Zelenina, Iryna, Simon, Paul, Bobnar, Matej, Naumann, Marcel, Svanidze, Eteri, Arnold, Frank, Borrmann, Horst, Burkhardt, Ulrich, Schnelle, Walter, Hassinger, Elena, Leithe-Jasper, Andreas, Grin, Yuri
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2018
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Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6045676/
https://www.ncbi.nlm.nih.gov/pubmed/30006638
http://dx.doi.org/10.1038/s41598-018-28991-w
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author Amon, Alfred
Zelenina, Iryna
Simon, Paul
Bobnar, Matej
Naumann, Marcel
Svanidze, Eteri
Arnold, Frank
Borrmann, Horst
Burkhardt, Ulrich
Schnelle, Walter
Hassinger, Elena
Leithe-Jasper, Andreas
Grin, Yuri
author_facet Amon, Alfred
Zelenina, Iryna
Simon, Paul
Bobnar, Matej
Naumann, Marcel
Svanidze, Eteri
Arnold, Frank
Borrmann, Horst
Burkhardt, Ulrich
Schnelle, Walter
Hassinger, Elena
Leithe-Jasper, Andreas
Grin, Yuri
author_sort Amon, Alfred
collection PubMed
description The influence of Al incorporation on the heavy fermion superconductor UBe(13) was investigated to explain the sample dependence of physical properties. Clear evidence for incorporated Al in flux-grown UBe(13) single crystals is presented by results from X-ray diffraction, nuclear magnetic resonance and X-ray spectroscopy. The increase of the lattice parameter and the concomitant change of the superconducting properties are caused by substitution of Be in the compound by 1–2 at.% Al. The minute amounts of Al in the structure were located by atomic resolution transmission electron microscopy. Specific heat measurements reveal the strong influence of incorporated Al on the physical properties of UBe(13). Upon long-term annealing, Al incorporated in single crystals can leave the structure, restoring properties of Al-free polycrystalline UBe(13).
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spelling pubmed-60456762018-07-16 Tracking aluminium impurities in single crystals of the heavy-fermion superconductor UBe(13) Amon, Alfred Zelenina, Iryna Simon, Paul Bobnar, Matej Naumann, Marcel Svanidze, Eteri Arnold, Frank Borrmann, Horst Burkhardt, Ulrich Schnelle, Walter Hassinger, Elena Leithe-Jasper, Andreas Grin, Yuri Sci Rep Article The influence of Al incorporation on the heavy fermion superconductor UBe(13) was investigated to explain the sample dependence of physical properties. Clear evidence for incorporated Al in flux-grown UBe(13) single crystals is presented by results from X-ray diffraction, nuclear magnetic resonance and X-ray spectroscopy. The increase of the lattice parameter and the concomitant change of the superconducting properties are caused by substitution of Be in the compound by 1–2 at.% Al. The minute amounts of Al in the structure were located by atomic resolution transmission electron microscopy. Specific heat measurements reveal the strong influence of incorporated Al on the physical properties of UBe(13). Upon long-term annealing, Al incorporated in single crystals can leave the structure, restoring properties of Al-free polycrystalline UBe(13). Nature Publishing Group UK 2018-07-13 /pmc/articles/PMC6045676/ /pubmed/30006638 http://dx.doi.org/10.1038/s41598-018-28991-w Text en © The Author(s) 2018 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
Amon, Alfred
Zelenina, Iryna
Simon, Paul
Bobnar, Matej
Naumann, Marcel
Svanidze, Eteri
Arnold, Frank
Borrmann, Horst
Burkhardt, Ulrich
Schnelle, Walter
Hassinger, Elena
Leithe-Jasper, Andreas
Grin, Yuri
Tracking aluminium impurities in single crystals of the heavy-fermion superconductor UBe(13)
title Tracking aluminium impurities in single crystals of the heavy-fermion superconductor UBe(13)
title_full Tracking aluminium impurities in single crystals of the heavy-fermion superconductor UBe(13)
title_fullStr Tracking aluminium impurities in single crystals of the heavy-fermion superconductor UBe(13)
title_full_unstemmed Tracking aluminium impurities in single crystals of the heavy-fermion superconductor UBe(13)
title_short Tracking aluminium impurities in single crystals of the heavy-fermion superconductor UBe(13)
title_sort tracking aluminium impurities in single crystals of the heavy-fermion superconductor ube(13)
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6045676/
https://www.ncbi.nlm.nih.gov/pubmed/30006638
http://dx.doi.org/10.1038/s41598-018-28991-w
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