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  Tracking aluminium impurities in single crystals of the heavy-fermion superconductor UBe13

Amon, A., Zelenina, I., Simon, P., Bobnar, M., Naumann, M., Svanidze, E., et al. (2018). Tracking aluminium impurities in single crystals of the heavy-fermion superconductor UBe13. Scientific Reports, 8(1): 10654. doi:10.1038/s41598-018-28991-w.

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Item Permalink: http://hdl.handle.net/21.11116/0000-0001-DFF5-0 Version Permalink: http://hdl.handle.net/21.11116/0000-0003-D382-B
Genre: Journal Article

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 Creators:
Amon, Alfred1, Author              
Zelenina, Iryna1, Author              
Simon, Paul2, Author              
Bobnar, Matej1, Author              
Naumann, Marcel3, Author              
Svanidze, Eteri1, Author              
Arnold, Frank3, Author              
Borrmann, Horst4, Author              
Burkhardt, Ulrich5, Author              
Schnelle, Walter6, Author              
Hassinger, Elena3, Author              
Leithe-Jasper, Andreas7, Author              
Grin, Yuri8, Author              
Affiliations:
1Chemical Metal Science, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863405              
2Paul Simon, Chemical Metal Science, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863418              
3Physics of Unconventional Metals and Superconductors, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_2466700              
4Horst Borrmann, Chemical Metal Science, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863410              
5Ulrich Burkhardt, Chemical Metal Science, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863422              
6Walter Schnelle, Inorganic Chemistry, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863441              
7Andreas Leithe-Jasper, Chemical Metal Science, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863406              
8Juri Grin, Chemical Metal Science, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863413              

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 Abstract: The influence of Al incorporation on the heavy fermion superconductor UBe13 was investigated to explain the sample dependence of physical properties. Clear evidence for incorporated Al in flux-grown UBe13 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 UBe13. Upon long-term annealing, Al incorporated in single crystals can leave the structure, restoring properties of Al-free polycrystalline UBe13.

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Language(s): eng - English
 Dates: 2018-07-132018-07-13
 Publication Status: Published in print
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Method: -
 Identifiers: DOI: 10.1038/s41598-018-28991-w
 Degree: -

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Title: Scientific Reports
  Abbreviation : Sci. Rep.
Source Genre: Journal
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Publ. Info: London, UK : Nature Publishing Group
Pages: 10654 Volume / Issue: 8 (1) Sequence Number: 10654 Start / End Page: - Identifier: ISSN: 2045-2322
CoNE: /journals/resource/2045-2322