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  Empirical way for finding new uranium-based heavy-fermion materials

Svanidze, E., Amon, A., Borth, R., Prots, Y., Schmidt, M., Nicklas, M., et al. (2019). Empirical way for finding new uranium-based heavy-fermion materials. Physical Review B, 99(22): 220403, pp. 1-7. doi:10.1103/PhysRevB.99.220403.

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Item Permalink: http://hdl.handle.net/21.11116/0000-0003-F712-2 Version Permalink: http://hdl.handle.net/21.11116/0000-0003-F718-C
Genre: Journal Article

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 Creators:
Svanidze, E.1, Author              
Amon, A.1, Author              
Borth, R.2, Author              
Prots, Y.3, Author              
Schmidt, M.4, Author              
Nicklas, M.5, Author              
Leithe-Jasper, A.6, Author              
Grin, Yu.7, Author              
Affiliations:
1Chemical Metal Science, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863405              
2Physics of Quantum Materials, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863462              
3Yuri Prots, Chemical Metal Science, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863424              
4Marcus Schmidt, Chemical Metal Science, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863415              
5Michael Nicklas, Physics of Quantum Materials, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863472              
6Andreas Leithe-Jasper, Chemical Metal Science, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863406              
7Juri Grin, Chemical Metal Science, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863413              

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 Abstract: The field of heavy-fermion physics emerged nearly four decades ago and has since remained one of the most prominent research directions in condensed-matter physics. Nonetheless, while significant progress has been made in unraveling heavy-fermion behavior and accompanying exotic phenomena, many questions remain. This issue can be advanced from two directions: comprehensive understanding of existing materials and discovery of novel systems. In this work, we propose a targeted method for discovery of uranium-based heavy-fermion materials by synthesis of complex intermetallic compounds with low mass percentage of uranium, high coordination number of uranium, and long overall shortest uranium bond length. We report the discovery and synthesis of the new complex uranium-based heavy-fermion material U23Hg88, which suggests this approach to be a reliable route for the targeted search of novel strongly correlated uranium-based materials. The Sommerfeld coefficient gamma = 630 mJ mol(U)(-1)K(-2) indicates extremely strong electronic correlations and places U23Hg88 among the heaviest uranium-based compounds. U23Hg88 orders antiferromagnetically below T-N = 2.2 K and displays a dual nature of the 5f electrons. This work will pave a way for a comprehensive understanding of heavy-fermion phenomena in general and uranium-based systems in particular.

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Language(s): eng - English
 Dates: 2019-06-172019-06-17
 Publication Status: Published in print
 Pages: -
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 Table of Contents: -
 Rev. Method: -
 Identifiers: DOI: 10.1103/PhysRevB.99.220403
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Title: Physical Review B
  Abbreviation : Phys. Rev. B
Source Genre: Journal
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Publ. Info: Woodbury, NY : American Physical Society
Pages: - Volume / Issue: 99 (22) Sequence Number: 220403 Start / End Page: 1 - 7 Identifier: ISSN: 1098-0121
CoNE: https://pure.mpg.de/cone/journals/resource/954925225008