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  Discovery of a Superhard Iron Tetraboride Superconductor

Gou, H. Y., Dubrovinskaia, N., Bykova, E., Tsirlin, A. A., Kasinathan, D., Schnelle, W., et al. (2013). Discovery of a Superhard Iron Tetraboride Superconductor. Physical Review Letters, 111(15): 157002, pp. 1-5. doi:10.1103/PhysRevLett.111.157002.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-0015-1E44-6 Version Permalink: http://hdl.handle.net/21.11116/0000-0000-B6A9-4
Genre: Journal Article

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 Creators:
Gou, H. Y., Author
Dubrovinskaia, N., Author
Bykova, E., Author
Tsirlin, A. A.1, Author              
Kasinathan, D.2, Author              
Schnelle, W.3, Author              
Richter, A., Author
Merlini, M., Author
Hanfland, M.4, Author              
Abakumov, A. M.4, Author              
Batuk, D., Author
Van Tendeloo, G., Author
Nakajima, Y., Author
Kolmogorov, A. N., Author
Dubrovinsky, L., Author
Affiliations:
1Chemical Metal Science, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863405              
2Physics of Correlated Matter, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863445              
3Walter Schnelle, Inorganic Chemistry, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863441              
4Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863404              

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 Abstract: Single crystals of novel orthorhombic (space group Pnnm) iron tetraboride FeB4 were synthesized at pressures above 8 GPa and high temperatures. Magnetic susceptibility and heat capacity measurements demonstrate bulk superconductivity below 2.9 K. The putative isotope effect on the superconducting critical temperature and the analysis of specific heat data indicate that the superconductivity in FeB4 is likely phonon mediated, which is rare for Fe-based superconductors. The discovered iron tetraboride is highly incompressible and has the nanoindentation hardness of 62(5) GPa; thus, it opens a new class of highly desirable materials combining advanced mechanical properties and superconductivity.

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Language(s): eng - English
 Dates: 2013-10-07
 Publication Status: Published in print
 Pages: -
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 Table of Contents: -
 Rev. Method: -
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Title: Physical Review Letters
  Abbreviation : Phys. Rev. Lett.
Source Genre: Journal
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Publ. Info: Woodbury, N.Y. : American Physical Society
Pages: - Volume / Issue: 111 (15) Sequence Number: 157002 Start / End Page: 1 - 5 Identifier: ISSN: 0031-9007
CoNE: https://pure.mpg.de/cone/journals/resource/954925433406_1